a. data can be transmitted in one direction only
b. data can be transmitted in both direction
c. data can be transmitted in both direction simultaneously
d. data cannot be transmitted
a. Direct
b. Suquential
c. Random
d. parallel
3. A lever used to control the movement of a cursor on a video screen is
a. keyboard
b. toystick
c. light pen
d. plotter
4. In synchronous transmission data from various users
a. require header
b. do not require header
c. sometimes require header
d. All of these
5. A half byte is know is
a. data
b. bit
c. half bye
d. nibble
6. A monitor looks like a TV set but it does not
a. receive TV signals
b. give a clear picture
c. gie a steady picture
d. display graphics
7. The first generation computers were characterised by
a. micro processor chips
b. thermionic valves
c. transistors
d. integrated circuits
8. RAM is used as a short memory because it is
a. volatile
b. has small capacity
c. is very expensive
d. is programmable
9. An assembler is a
a. program
b. person who assembles the parts
c. symbol
d. language
10. Which unit decodes information and present to the used
a. ALU
b. Storage unit
c. Output unit
d. Control unit
11. Main storage is also called
a. accumulator
b. control unit
c. register unit
d. memory
12. Which device uses much less computer time than the light pen and gives resolutions equal to that of the CRT display?
a. Mouse
b. Touch tablet
c. Touch panel
d. Data tablet
