WorksheetsPC Assy Day 1 Revision
Total questions: 30
Worksheet time: 23mins
Computers can be categorized into Digital, Analog and Hybrid based on their design and working
Digital
Analog
Hybrid
I Don't Know
A thermometer is an example of an analog computer
Yes
No
Maybe
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In digital technology data which can be in the form of letters, symbols or numbers is represented in binary form i.e. 0 and 1.
No
Yes
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Hybrid Computer uses both analog and digital technology. It has the speed of analog computer and the accuracy of a digital computer.
I Don't Know
No
Yes
Classification of Digital Computers
Micro Computers
Mini Computers
Main Frames
Super Computers
My Computers
1st Generation Computers
were built using intergrated circuits
were built using vacuum tubes
were built using You Tubes
were built using 2 way diodes
Which statements are TRUE for Main Frames ?
These computers are large and very powerful computers with very high memory capacity.
These can process huge databases such as census at extremely fast rate.
They are suitable for big organizations, banks, industries etc. and can support hundreds of users simultaneously on the network.
These are useful for small business organizations.
Supercomputers are ...
the fastest and very expensive computers. They can execute billions of instructions per second.
multiprocessor, parallel systems suitable for specialized complex scientific applications involving huge amounts of mathematical applications such as weather forecasting.
being used as work stations, CAD, multimedia and advertising applications.
2nd Generation Computers
were built using transistors
were built using vacuum tubes
were built using You Tubes
were built using 2 way diodes
Components of Computer Processing are
Input Unit
Output Unit
CPU
Central Processing Unit (CPU)
is called the brain of the computer because it is the control center of the computer.
first fetches instructions from memory and then interprets them so as to know what is to be done.
executes or performs the required computation and then either stores the output or displays on the output device.
consists of input devices that are attached to the computer.
Arithmetic and Logic Unit (ALU)
performs mathematical calculations and takes logical decisions.
imports various from compact discs
displays only 1 information on screen
Control Unit
coordinates and controls the data flow in and out of CPU
controls all the operations of ALU, memory registers and also input/output units.
responsible for printing information on a printer
Memory Unit
sends control signals to input/output devices until the required operation is done
Memory attached to the CPU is used for storage of data and instructions and is called internal memory
is also called as RAM, i.e. Random Access Memory.
Output Unit
consists of output devices that are attached with the computer.
converts the binary data coming from CPU to human understandable form.
common output devices are keyboard, mouse and memory stick.
A computer consists of input unit that takes input, a CPU that processes the input and an output unit that produces output.
True
False
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The Image shows a Second Generation Computer
True
False
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Image displays the First Generation Computer
I Don't Know
True
False
RAM (Random-Access Memory)– a type of data storage (memory element) used in computers that temporarily stores programs and data.
False
I Don't Know
True
Mouse – a hand-held pointing device that can control the position of a cursor (pointer) on a display screen.
I Don't Know
True
False
CPU (Central Processing Unit) – CPU is often referred to as the brain or engine of a computer where most of the processing and operations take place.
True
False
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Image shows The Very First Apple Computer
True
False
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Image shows an Apple II computer
False
I Don't Know
True
The Image shows a floppy disk or floppy diskette
True
False
I think so
Image shows the First Generation Computer
True
I Don't Know
False
Following are certain facts of a computer
Computers have no feelings or emotions.
No I.Q.
The operating environment of the computer should be dust free and suitable
CPU itself has following three components.
1) Memory or Storage Unit
2) Control Unit
3) ALU (Arithmetic Logic Unit)
True
False
I Don't Know
ROM stands for Read Only Memory. The memory from which we can only read but cannot write on it.
False
True
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Bit (Binary Digit)
A binary digit is logical 0 and 1 representing a passive or an active state of a component in an electric circuit.
True
I Don't Know
False
Hardware and software are NOT dependent on each other. Both of them will work seperately and make a computer produce a useful output individually.
True
I Don't Know
False
