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3.

a) a set of rules; b) a group of numbers; c) a lot of in­structions

4.1 / О______match the physical and electrical charac­teristics of input-output devices, a) interchanges; b) interfaces; c) interpretations

5. Letter-quality, dot-matrix and ink-jet printers are all ______printers.

a) line; b) page; c) character

6. The most common device used to transfer information from the user to the computer is the______.

a) keyboard; b) printer; c) modem

7. Input-output units link the computer to its external

a) requirement; b) development; c) environment 8. I / О devices can be classified according to their speed,

visual displays being_____.__ devices.

a) high-speed; b)medium-speed; c) low-speed

1. Computer a) an electronic device accepting data pro-

cessing results from the computer sys­tem;

2. Input        b) the unit performing arithmetic opera-

tions called for in the instructions;

3. Output

4. Software

5. Hardware

6. Storage

7. CPU

8. CU

9. ALU

10. Program j)

c) the unit coordinating all the activities of various components of the computer. It reads information, enterpretes instruc­tions, performs operations, etc.;

d) a set of programs designed to control the operation of a computer;

e) lists of instructions followed by the con­trol unit of the CPU:

f) an electronic device keying information into the computer;

g) the unit holding all data to be processed, intermediate and final results of process­ing;

h) visible units, physical components of a data processing system; the unit that directs the sequence of sys­tem operations, selects instructions and interpretes them;

a device with a complex network of elec­tronic circuits that can process informa­tion, make decisions, and replace people in routine tasks.

i)

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