What is a light pen?
Mechanical Input device
Optical input device
Electronic input device
Optical output device
Correct Answer :
B. Optical input device
Related Questions
The contents of information are stored in
Memory data register
Memory address register
Memory arithmetic registers
Memory access register
What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?
Bus control
Interrupts
Bus arbitration
Status
A set of flip flops integrated together is called ____
Counter
Adder
Register
None of the above
The time required for the fetching and execution of one simple machine instruction is
Delay time
CPU cycle
Real time
Seek time
A byte consists of
One bit
Four bits
Eight bits
Sixteen bits
Which is another name for functional language?
Machine
Application language
Low-level language
High-level language
Personnel who design, program, operate and maintain computer equipment refers to
Console-operator
Programmer
Peopleware
System Analyst
CD-ROM stands for
Compactable Read Only Memory
Compact Data Read Only Memory
Compactable Disk Read Only Memory
Compact Disk Read Only Memory
Which one of the following is NOT a computer language
MS-Excel
BASIC
COBOL
C++
Which device can understand difference between data & programs?
Input device
Output device
Memory
Microprocessor
Which of the following class of computers can process physical quantities such as speed?
Analog Computers
Digital Computers
Hybrid Computers
None of above
What are the stages in the compilation process?
Feasibility study, system design and testing
Implementation and documentation
Lexical Analysis, syntax analysis, and code generation
None of the above
Which of the following is correct acronym of VGA?
Video Graphics Array
Visual Graphics Array
Volatile Graphics Array
Video Graphics Adapter
The two basic types of record access methods are:
Sequential and random
Sequential and indexed
Direct and immediate
Online and real time
The two kinds of main memory are:
Primary and secondary
Random and sequential
ROM and RAM
All of above
A fault in a computer program which prevents it from working correctly is known as
Boot
Bug
Biff
Strap
Which of the following is not an input device?
OCR
Optical scanners
Voice recognition device
COM (Computer Output to Microfilm)
UNIVAC is
Universal Automatic Computer
Universal Array Computer
Unique Automatic Computer
Unvalued Automatic Computer
Which of the following items are examples of storage devices?
Floppy / hard disks
CD-ROMs
Tape devices
All of the above
Access time is
seek time + latency time
seek time
seek time ? latency time
latency time
Which device is required for the Internet connection?
Joystick
Modem
CD Drive
NIC Card
________ is the key to close a selected drop -down list; cancel a command and close a dialog box.
TAB
SHIFT
ESC
F10
What difference does the 5th generation computer have from other generation computers?
Technological advancement
Scientific code
Object Oriented Programming
All of the above
________ computer is small general purpose micro computer, but larger than portable computer
Hybrid
Digital
Desktop
Laptop
In 1999, the Melissa virus was a widely publicised:
E-mail virus.
Macro virus.
Trojan horse.
Time bomb.
Which of the following is not computer language?
High level language
Medium level language
Low level language
All of the above
Which of the following printing devices an output composed of a series of data?
Wire matrix printer
Band printer
Wang image printer
Both a and c
Size of the primary memory of a PC ranges between
2KB to 8KB
64KB & 256KB
256KB & 640KB
None of these
How many address lines are needed to address each machine location in a 2048 x 4 memory chip?
10
11
8
12
Which of the following memories need refresh?
SRAM
DRAM
ROM
All of the above