Thursday, October 13, 2016


21. The main electronic component used in first generation computers was
A) Transistors
B) Vacuum Tubes and Valves
C) Integrated Circuits
D) None of above
22. A dumb terminal has
A) an embedded microprocessor
B) extensive memory
C) independent 
processing capability
D) a keyboard and screen
23. One millisecond is
A) 1 second
B) 10
th of a seconds
C) 1000
th of a seconds
D) 10000
th of a seconds
24. The output quality of a printer is measured by
A) Dot per sq. inch
B) Dot per inch
C) Dots printed per unit time
D) All of the above
25. Which of the following was a special purpose computer?
D) All of the above
26. What was the computer invented by Attanasoff and Clifford?
A) Mark I
C) Z3
D) None of above
27. Which of the following storage devices can store maximum amount of data?
A) Floppy Disk
B) Hard Disk
C) Compact Disk
D) Magneto Optic Disk
28. Which computer was considered the first electronic computer until 1973 when court invalidated the patent?
C) Z3
29. A physical connection between the microprocessor memory and other parts of the microcomputer is known as
A) Path
B) Address bus
C) Route
D) All of the above
30. High density double sided floppy disks could store _____ of data
A) 1.40 MB
B) 1.44 GB
C) 1.40 GB
D) 1.44 MB
31. A high quality CAD system uses the following for printing drawing and graphs
A) Dot matrix printer
B) Digital plotter
C) Line printer
D) All of the above
32. Which of the following is not an input device?
B) Optical scanners
C) Voice recognition device
D) COM (Computer Output to Microfilm)
33. The accuracy of the floating-point numbers representable in two 16-bit words of a computer is approximately
A) 16 digits
B) 6 digits
C) 9 digits
D) All of above
34. In most of the IBM PCs, the CPU, the device drivers, memory, expansion slots and active components are mounted on a single board. What is the name of the board?
A) Motherboard
B) Daughterboard
C) Bredboard
D) Fatherboard
35. In most IBM PCs, the CPU, the device drives, memory expansion slots and active components are mounted on a single board. What is the name of this board?
A) Motherboard
B) Breadboard
C) Daughter board
D) Grandmother board
36. Magnetic disks are the most popular medium for
A) Direct access
B) Sequential access
C) Both of above
D) None of above
37. A technique used by codes to convert an analog signal into a digital bit stream is known as
A) Pulse code modulation
B) Pulse stretcher
C) Query processing
D) Queue management
38. Regarding a VDU, Which statement is more correct?
A) It is an output device
B) It is an input device
C) It is a peripheral device
D) It is hardware item
39. A modern electronic computer is a machine that is meant for
A) Doing quick mathematical 
B) Input, storage, manipulation and outputting of data
C) Electronic data processing
D) Performing repetitive tasks accurately

40. When was vacuum tube invented?
A) 1900
B) 1906
C) 1910
D) 1880