who designed the first mechanical machine that included memory

Answers

Answer 1

The first mechanical machine that included memory was the Analytical Engine, which was designed by Charles Babbage in the mid-19th century. Babbage was an English mathematician and inventor who is often referred to as the "father of computing."

He conceived of the Analytical Engine as a general-purpose computer that could perform a wide range of calculations.

The Analytical Engine was designed to be programmed using punched cards, which could be used to input data and instructions. It included two main components: the mill, which performed the actual calculations, and the store, which held the data and instructions.

Although Babbage was never able to complete a working version of the Analytical Engine, his designs were influential in the development of modern computing. The concept of using punched cards for inputting data and instructions was later adopted by IBM for its early computers, and the idea of separating storage from processing also became a fundamental principle of computer architecture.

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Related Questions

Question:

Why is my step-sis stuck in the washing machine every day?

———————————————————————————————-

Please, answer quick! I really need help figuring this out.

Answers

I think she wants wood

When choosing a respirator for your job, you must conduct a __ test

Answers

Answer:

It's a fit test

in the remote access domain, if private data or confidential data is compromised remotely, you should set automatic blocking for attempted logon retries.T/F

Answers

False. According to the question in the remote access domain, if private data or confidential data is compromised remotely, you should set automatic blocking for attempted logon retries.

Describe domain.

The term "domain," which is specific here to internet, can apply to both the structure of the internet and the organization of a company's network resources. A domain is typically a sphere of learning or a governing region.

Who owns domain names?

Whoever first filed the website address with a recognized registrar, such Domain.com, owns the domain name. That person must pay service charges and keep all of personal contact information current in order to preserve ownership.

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Is the impedance of the capacitor purely reactive, and how does it compare to the nominal value of the ideal capacitor? Why or why not is it purely reactive?

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In an electric field, a capacitor is a device that stores electrical energy. It has two terminals and is a passive electrical component. Capacitance refers to a capacitor's effect.

What is the impedance of an ideal capacitor?An perfect capacitor has an infinite resistance. For all frequencies and capacitance levels, the reactance of a perfect capacitor, and consequently its impedance, is negative.A capacitor that has no resistance and therefore doesn't lose any energy while it's operating is the ideal capacitor. It just possesses capacitance. There is no dielectric loss in a perfect capacitor. High temperature stability characterizes the ideal capacitor.As capacitance and frequency increase, capacitive reactance falls. Impedance is the complete opposition that reactance and resistance give.Similar to inductors, the ideal capacitor is a totally reactive device with no resistive (power dissipative) effects whatsoever. Of course, nothing is so flawless in the actual world. Capacitors, however, have the advantage of often being more pure reactive components

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Technician A states that a brake lathe is used to make a used brake rotor surface "like new". Technician B states that a brake lathe can make any rotor reusable. Who is correct?

Answers

Answer:

Both Technician A and B are correct.

Explanation: A brake lathe is a special tool used to improve or work on the surface of brake pads it helps to smoothen the surface.

Brake lathe has been found to be very effective in removing rusts in rotors and unevenness in the brake pad surfaces in order to ensure the efficiency and effectiveness of the brake system of a vehicle. Hence, a brake lathe helps to make brake rotor surface as smooth as possible.

No help dude that’s not even part of the question

Answers

Answer:

wat?

Explanation:

The question should be labeled in the psychology section, but what I assume the question means is some sort of paradoxical reverse psychology method of braincell loss. Even photosynthesis doesn't understand what it means. The question probably is what is the question, not that there's no help.

Hope this helps (a little)!

Before using a vise to mount work, you should do all of the following except

Answers

Before using a vise to mount work, wipe the vise base and worktable clean, inspect it for burrs and nicks, and bolt it firmly to the table.

What is meant by vise?A vise or vice is a mechanical tool used to hold an object in place so that work can be done on it. The two parallel jaws of a vise are threaded in and out by a screw and a lever, with one jaw being fixed and the other movable. A set of locking pliers with a lever action is what is meant by the term "vise grip." A vise, also spelled vice, is a holding mechanism with two parallel jaws; one jaw is fixed and the other is moveable via a screw, lever, or cam. The vise may be permanently affixed to a bench when used to hold a workpiece during manual processes like filing, hammering, or sawing.

The complete question is,
When a vise is used to mount work, ____.

wipe the vise base and worktable clean, inspect it for burrs and nicks, and bolt it firmly to the table

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Ear plugs and ear muffs may be used at the same time

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It is TRUE. Ear plugs and ear muffs may be used at the same time.

Why is this so?

Ear Muffs are  one of a pair of pads joined by a flexible band and worn to protect the ears against cold or noise.

It is OK to use both ear plugs and ear muffs at the same time for individuals who operate in extremely noisy environments and do not need to talk much while working.

They are thereby offering maximal protection against the potential of hearing impairment.

Thus, it is correct to state that the above statement is true.

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The fan pressure differential gage on an air handler reads 12 cm H2O. What is this pressure differential in kiloPascals

Answers

Answer:

\(1.18\ \text{kPa}\)

Explanation:

g = Acceleration due to gravity = \(9.81\ \text{m/s}^2\)

h = Height of reading = 12 cm

\(\rho\) = Density of water = \(1000\ \text{kg/m}^3\)

Pressure due to height difference is given by

\(P=\rho gh\\\Rightarrow P=1000\times 9.81\times 12\times 10^{-2}\\\Rightarrow P=1177.2\ \text{Pa}=1.1772\ \text{kPa}\approx 1.18\ \text{kPa}\)

The pressure differential is \(1.18\ \text{kPa}\).

The pressure differential will be "1.18 kPa".

According to the question,

Height of reading, \(h = 12 \ cm\)Density of water, \(\rho = 1000 \ kg/m^3\)Acceleration due to gravity, \(g = 9.8 \ m/s^2\)

The formula will be:

→ \(P = \rho g h\)

By putting the values, we get

      \(= 1000\times 9.8\times 12\times 10^{-2}\)

      \(= 1177.2 \ Pa\)

      \(= 1.18 \ kPa\)

Thus the answer above is correct.

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The I26 profile beam is supported and loaded as in the figure. It is required to calculate the vertical movement of the free end and the rotation of the free end.

The I26 profile beam is supported and loaded as in the figure. It is required to calculate the vertical

Answers

Answer:

...

Explanation:

...

table saws you can use with __ or __ but not both at the same time

Answers

Answer:

wood or metal

Explanation:

sorry if incorrect

What i the relationhip between the weight of a Viking boat and water diplacement?

Answers

The weight of the water displaced is calculated as the product of the ship's water displacement volume and water density. Displacement is therefore equal to ship weight.

Every floating object displaces its own weight in the liquid in which it is submerged according to the Archimedes principle. A vessel's weight must match the weight of the volume of water it removes in order for it to float freely in the water. The amount of water that a vessel displaces is known as displacement.

The buoyant force acting on the object will be equal to gravity if it displaces an amount of water equal to its own weight, at which point the object will float. However, if an object weighs more than the volume of water it moves, it will sink since the buoyant force will be greater than gravity.

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A steam power plant operates on the reheat Rankine cycle. Steam enters the highpressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450 °C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5 percent, determine (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency

Answers

Answer:

A) condenser pressure = 9.73 kPa,

B) 10242 kw

C) 36.9%

Explanation:

given data

entrance pressure of steam = 12.5 MPa

temperature of steam = 550⁰c

flow rate of steam = 7.7 kg/s

outer pressure = 2 MPa

reheated steam temperature = 450⁰c

isentropic efficiency of turbine( nt ) = 85% = 0.85

isentropic efficiency of pump = 90% = 0.90

From steam tables

at 12.5 MPa and 550⁰c ; h3 = 3476.5 kJ/kg,  S3 = 6.6317 kJ/kgK

also for an Isentropic expansion

S4s = S3 .

therefore when S4s = 6.6317 kJ/kg and P4 = 2 MPa

h4s = 2948.1 kJ/kg

nt = 0.85

nt (0.85) = \(\frac{h3-h4}{h3-h4s}\) = \(\frac{3476.5 - h4}{3476.5 - 2948.1}\)

making h4 subject of the equation

h4 = 3476.5 - 0.85 (3476.5 - 2948.1)

h4 = 3027.3 kj/kg

at P5 = 2 MPa and T5 = 450⁰c

h5 = 3358.2 kj/kg,  s5 = 7.2815 kj/kgk

at P6 , x6 = 0.95  and s5 = s6

using nt = 0.85 we can calculate for h6 and h6s

from the chart attached below we can see that

p6 = 9.73 kPa, h6 = 2463.3 kj/kg

B) the net power output

solution is attached below

c) thermal efficiency

thermal efficiency = 1 - \(\frac{qout}{qin}\) = 1 - ( 2273.7/ 3603.8) = 36.9% ≈ 37%

A steam power plant operates on the reheat Rankine cycle. Steam enters the highpressure turbine at 12.5
A steam power plant operates on the reheat Rankine cycle. Steam enters the highpressure turbine at 12.5

a line passes through (1,9) is parallel to the line through (-2,2) and (4,5) find its equation.​

Answers

okay can i see a picture please

For heat transfer purposes, a standing man can be mod-eled as a 30-cm-diameter, 170-cm-long vertical cylinderwith both the top and bottom surfaces insulated and with theside surface at an average temperature of 34°C. For a con-vection heat transfer coefficient of 15 W/m2·K, determinethe rate of heat loss from this man by convection in still airat 20°C. What would your answer

Answers

Answer:

Rate of Heat Loss = 336 W

Explanation:

First, we will find the surface area of the cylinder that is modelled as the man:

\(Area = A = (2\pi r)(l)\)

where,

r = radius of cylinder = 30 cm/2 = 15 cm = 0.15 m

l = length of cylinder = 170 cm = 1.7 m

Therefore,

\(A = 2\pi(0.15\ m)(1.7\ m)\\A = 1.6\ m^2\)

Now, we will calculate the rate of heat loss:

\(Rate\ of\ Heat\ Loss = hA\Delta T\)

where,

h = convective heat tranfer  coefficient = 15 W/m²K

ΔT = Temperature difference = 34°C - 20°C = 14°C

Therefore,

\(Rate\ of\ Heat\ Loss = (15\ W/m^2K)(1.6\ m^2)(14\ K)\\\)

Rate of Heat Loss = 336 W

Can space debris take out a whole state

Answers

Yes depends how big the debris is

Min-su is in the market to purchase or build a home. He has a pretty small budget. It's important to
him that his home has all the standard amenities (dishwasher, washer and dryer, refrigerator), but he
doesn't feel like he needs a lot of space because he lives all by himself. What would be the BEST
housing choice for Min-su?

Answers

Gleaning from the presented data, Min-su's optimum housing selection would be a wee apartment or studio flat which encompasses all the archetypical amenities required by him.

What is the best housing?

This route appears far more economical when compared to constructing or buying a house.

Moreover, an apartment or studio pad offers Min-su the requisite area he needs as single tenant, sidestepping superfluous areas or acreage that are of little benefit to him. It also encompasses the comfort of upkeep and maintenance matters tackled by the landlord or property custodianship firm, streamlining his expenses in both time and money in the forthcoming terms.

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A tank has a gauge pressure of 552 psi. The cover of an inspection port on the tank has a surface area of 18 square inches. What is the total force the cover is experiencing.

Answers

Answer:

44197.55 N

Explanation:

From the question,

Pressure of the pressure guage (P) = Total force experienced by the cover (F)/Area of the cover (A)

P = F/A................ Equation 1

make F the subeject of the equation

F = P×A............... Equation 2

Given: P = 552 psi = (552×6894.76) = 3805907.52 N/m², A = 18 square inches = (18×0.00064516) = 0.01161288 m²

Substitute these values into equation 2

F = ( 3805907.52×0.01161288)

F = 44197.55 N

A crawl space or underfloor space must contain ____. Question 3 options: A) at least 4 ft of head clearance B) dedicated HVAC branch circuits C) a disconnecting means for HVAC equipment D) access to HVAC equipment

Answers

A crawl space or underfloor space must contain C) a disconnecting means for HVAC equipment.

What is the  HVAC equipment?

Major HVAC equipment includes heaters, air handling units, and chillers or air conditioners. The central HVAC system is located away from the central equipment room building and supplies conditioned air through the duct system.

The air conditioner circuit breaker (ACD) is located between the road center and the air conditioner. ACDs provide a visible disconnecting means when performing maintenance and are commonly referred to as circuit breakers, extractors, or air conditioning switches.

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Select the correct answer.
Which country first initiated the slow city movement?
A. New Zealand
B. Italy
C. United States
D. China

Answers

Answer:

B. Italy

Explanation:

Hope this helps :)

The answer is B) Italy

Write a conditional that multiplies the value of the variable pay by one-and-a-half if the value of the boolean variable workedOvertime is true . 2-Write the definition of a class Simple . The class has no constructors, methods or instance variables. 3- Write the definitions of two classes Day and Night . Both classes have no constructors, methods or instance variables. Note: For this exercise, please do not declare your classes using the public visibility modifier. 4- Write the code for invoking a method named sendSignal . There are no arguments for this method. Assume that sendSignal is defined in the same class that calls it.

Answers

The Conditional that multiplies the value of the variable pay by one-and-a-half if the value of the boolean variable workedOvertime is true is given below

python

if workedOvertime:

   pay *= 1.5

What is the conditional  function?

A boolean variable is a type of variable that can hold two possible values: true or false. It is used to represent logical states or conditions in programming. Boolean variables are commonly used in decision-making and control structures .

If the boolean variable workedOvertime is True, the variable pay gets increased by 50 percent in this conditional statement.

The class named Simple does not contain any instance variables, methods or constructors.

python

class Simple:

   pass

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Question 2 Resilience engineering is concerned with adverse external events that can lead to system failure. Resilient systems are flexible and adaptable so that they can cope with the unexpected. As a software engineer you need to educate system developers of four characteristics as outlined by Hollnagel (2010) that reflect the resilience of an organisation. Make sure to also include an example for each characteristic

Answers

These four characteristics, as outlined by Hollnagel (2010), are critical in developing resilient systems that can cope with unexpected situations and adverse external events. Software engineers must educate system developers about these characteristics to develop more resilient systems.

Resilience engineering is about developing adaptable systems that can handle unexpected situations and are able to cope with the effects of adverse external events that might cause system failure. As a software engineer, you need to inform system developers about the following four characteristics that reflect the resilience of an organization, as described by Hollnagel (2010):Maintainability: This characteristic reflects the degree to which a system can be maintained or repaired after it has been damaged. In other words, it assesses the system's ability to remain in good working order or quickly recover from damage. An example of maintainability would be the ability to quickly repair an engine that has been damaged during an accident.Flexibility: This characteristic reflects the degree to which a system can be modified or adapted to cope with changing circumstances. Flexibility is essential for resilience because it enables a system to respond to new challenges and adapt to different circumstances. An example of flexibility would be the ability to change the specifications of a car to adapt to different driving conditions.Redundancy: This characteristic reflects the degree to which a system can continue to function even if some of its components fail. Redundancy is important because it ensures that the system can continue to operate even if one or more components are not working properly. An example of redundancy would be having a backup generator in case the primary generator fails.Responsiveness: This characteristic reflects the degree to which a system can respond to changing circumstances or threats. Responsiveness is important because it enables a system to quickly and effectively respond to unexpected events. An example of responsiveness would be the ability of an air traffic control system to quickly respond to changing weather conditions to ensure the safety of airplanes in the area.

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Calculate the allowable bending moment for a solid rectangular 6-in.-by-16-in. timber beam if the allowable bending stress is 1000 psi. Assume that the large dimension is vertical and parallel to the applied loads.
(a) Use nominal dimensions.
(b) Use dressed dimensions.

Answers

The bending moments for the rectangular solid are:

a) M = 256,000 in-lb

b) M = 227,730 in-lb

How to calculate the allowable bending moment?

a) To calculate the allowable bending moment for a solid rectangular timber beam, we can use the formula below:

M = (allowable stress)*(section modulus)

where M is the allowable bending moment and the section modulus is a measure of the beam's resistance to bending.

For a solid rectangular beam with nominal dimensions of 6 inches by 16 inches, the section modulus can be calculated as:

S = (b*h²) / 6

where b is the width of the beam and h is the height.

Substituting the values, we get:

S = (6*6²) / 6

S = 256 in³

Now, we can calculate the allowable bending moment as:

M = (allowable stress)*(section modulus)

M = 1000 psi*256 in³

M = 256,000 in-lb

Therefore, the allowable bending moment for the timber beam with nominal dimensions is 256,000 in-lb.

(b) For dressed dimensions, we need to adjust the section modulus calculation by subtracting the amount of wood that is removed during the dressing process. Assuming that the dressing process removes 1/8 inch from each side, the width and height of the dressed beam would be 5 3/4 inches and 15 1/2 inches, respectively.

Using these dimensions, the section modulus can be calculated exactly like above, but just with the different numbers:

S = (b*h²) / 6

S = (5.75*15.5²) / 6

S = 227.73 in³

Now replace that in the formula

M = 1000 psi x 227.73 in³

M = 227,730 in-lb

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Technician A says that the refractometer reading is determined at the point of the scale where the dark and light areas meet. Technician B says that the reading is determined by where a dial points on a scale. Who is correct

Answers

Answer:

Technician B says that the reading is determined by where a dial points on a scale.

Explanation:

A refractometer is a devise used by scientists to gauge a liquids index of refraction.

The refractive index of a liquid is the ratio of light velocity of a specific wavelength in air to its velocity in the substance in evaluation.

The steps of reading a measurement are;

point the front of the refractometer towards the light source and view into the eyepieceYou will see the line outlined at a different point on the refractometer's internal indexRead the point on the index at which the line falls

What is the Laplace Transform of:

f(t)=6e^(−5t)+e^(3t)+5t^3−9

Answers

\(\boxed{ℒ_t[f(t)] =\frac{30}{{s}^{4} } - \frac{9}{s} + \frac{6}{s + 5} + \frac{1}{s - 3}} \)

This holds true because:

\(\lim_{s\to\infty} [\frac{30}{{s}^{4} } - \frac{9}{s} + \frac{6}{s + 5} + \frac{1}{s - 3}] =0 \)

[The answer is throughly verified, hence you can trust this :)]

During this experiment, it was important to keep some parameters constant so we can compare the efficiency of different alcohols. Which one of the parameter was not constant?.

Answers

The purification of a wide range of materials involves the use of distillation, a significant commercial procedure.

The purification of a wide range of materials involves the use of distillation, a significant commercial procedure. However, it would definitely be helpful to clarify the terms that describe the procedure and related qualities before we start a discussion of distillation.

Although you may be familiar with several of these terms, you might not be aware of their precise definitions. Let's start by outlining the procedure for changing a material from its condensed phase to its gas phase. This process is known as sublimation for solids and vaporization for liquids. Both procedures call for heat.

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A pequin walks 10 feet in six second how far does the pequin wals in 45 seconds

Answers

Answer:

7.5 feet

Explanation:

45 divided by 6 is 7.5

Answer:

7.5 feet

Explanation:

45 divided by 6 is 7.5

What is the purpose of a career portfolio?
to introduce a resume and ask for a job interview
to provide relevant information in a job application
to keep track of all of the jobs you’ve applied for throughout your career
to collect work samples and the data that is used in a resume

Answers

Answer:

c

Explanation:

Answer: The Answer is B

Explanation:

When a customer goes to shop in a supermarket, he/she starts by filling all the items they need on the trolley. The customer then pushes the trolley to the trolley to the cashier who calculates the total cost of all the items and presents the same o the customer. Thereafter, the customer may decide to pay in cash or present a card. The credit card is then swiped by the cashier through a card reader that debits the same amount from the customer’s account. The cashier then returns the card to the customer. represent the above using a use-case diagram ​

Answers

A Use-Case Diagram (UCD)refers to all the possible interactions that a person or one system can possibly have with another system, represented in a graphical format.

There are four main constituents of a use-case diagram. They are:

The actors who interact with the systemthe systemthe use cases andthe lines that represent the relationships

UCDs are used to

capture the requirements of a systemacquire the external persons' point of viewidentify risk factors associated with a project.

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When a customer goes to shop in a supermarket, he/she starts by filling all the items they need on the

A very high reynolds number (> 10 million) is associated with what type of boundary layer?

Answers

Answer:Turbulent

Explanation:

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