What is a light pen?
A Mechanical Input device
Optical input device
Electronic input device
Optical output device
Correct Answer :
B. Optical input device
Related Questions
The full form of ALU is
Arithmetic Logic Unit
Array Logic Unit
Application Logic Unit
None of above
Instruction in computer languages consists of
OPCODE
OPERAND
Both of above
None of above
The first machine to successfully perform a long series of arithmetic and logical operations was:
ENIAC
Mark-I
Analytic Engine
UNIVAC-1
A 32 bit microprocessor has the word length equal to
2 byte
32 byte
4 byte
8 byte
Which is valid statement?
1 KB = 1024 Bytes
1 MB = 1024 Bytes
1 KB = 1000 Bytes
1 MB = 1000 Bytes
The two major types of computer chips are
External memory chip
Primary memory chip
Microprocessor chip
Both b and c
Excessive parallel processing is related to
First generation
Fourth generation
Fifth Generation
Third generation
in which year was UK's premier computing event started?
1980
1985
1986
1987
Which of the following memories needs refreshing?
SRAM
DRAM
ROM
All of above
When was vacuum tube invented?
1900
1906
1910
1880
Most important advantage of an IC is its
Easy replacement in case of circuit failure
Extremely high reliability
Reduced cost
Lower power consumption
Computers manipulate data in many ways, and this manipulation is called________
upgrading
processing
batching
utilizing
The advantage of COM are its and
Compact size; speed readability
Compact size, speed
Readability; speed
Low cost; readability
Abacus was the first
electronic computer
mechanical computer
electronic calculator
mechanical calculator
Instructions and memory address are represented by
Character code
Binary codes
Binary word
Parity bit
A directly accessible appointment calendar is feature of a __ resident package
CPU
Memory
Buffer
ALU
The basic operations performed by a computer are
Arithmetic operation
Logical operation
Storage and relative
All the above
The computer size was very large in
First Generation
Second Generation
Third Generation
Fourth Generation
Which of the following are the functions of a operating system
Allocates resources
Monitors Activities
Manages disks and files
All of the above
The radian of a number system
Is variable
Has nothing to do with digit position value
Equals the number of its distinct counting digits
Is always an even number
Second Generation computers were developed during
1949 to 1955
1956 to 1965
1965 to 1970
1970 to 1990
Which of the following is not a class based on size?
Mainframe Computer
Micro Computer
Mini Computer
Digital Computer
Which of the following is not input unit device?
scanner
camera
plotter
digitizer
Office LANS, which are scattered geographically on large scale, can be connected by the use of corporate
CAN
LAN
DAN
WAN
The lower deck of an abacus is known as
heaven
sky
earth
floor
A hybrid computer
Resembles digital computer
Resembles analogue computer
Resembles both a digital and analogue computer
None of the above
The personal computer industry was started by
IBM
Apple
Compaq
HCL
Codes consisting of lines of varying widths or lengths that are computer-readable are known as-
an ASCII code
a magnetic tape
an OCR scanner
a bar code
Which of the following memory medium is not used as main memory system?
Magnetic core
Semiconductor
Magnetic tape
Both a and b
What was the expected feature of fifth generation computers when Japan started FGCS?
Operating Systems
Paralled Processing
ULSI
None of above