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
Correct Answer :
D. a bar code
Related Questions
Which electronic component was made out of semiconductor material?
Vacuum tubes
Transistors
Ics
All of above
In order to play and hear sound on a computer, one needs:
A sound card and speakers
A microphone
All of them required
None of them required
The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as
Magnetic core memory
Magnetic tape memory
Magnetic disk memory
Magnetic bubble memory
Which is the highest form?
Data
Information
Knowledge
All of above
A technique used by codes to convert an analog signal into a digital bit stream is known as
Pulse code modulation
Pulse stretcher
Query processing
Queue management
Any storage device added to a computer beyond the immediately usable main storage is known as
Floppy disk
Hard disk
Backing store
Punched card
Regarding a VDU, Which statement is more correct?
It is an output device
It is an input device
It is a peripheral device
It is hardware item
The computer code for the interchange of information between terminals is
ASCII
BCD
EBCDIC
All of above
The first computers were programmed using
assembly language
machine language
source code
object code
Which technology is used in Compact disks?
Mechanical
Electrical
Electro Magnetic
Laser
MICR stands for
Magnetic Ink Character Reader
Magnetic Ink Code Reader
Magnetic Ink Cases Reader
None
The ability to recover and read deleted or damaged files from a criminal's computer is an example of a law enforcement speciality called:
robotics
simulation
computer forensics
animation
From which generation operating systems were developed?
First
Second
Third
Fourth
The time required for the fetching and execution of one simple machine instruction is
Delay time
CPU cycle
Real time
Seek time
The first electronic computer was developed by
J.V. Attansoff
Bill Gates
Simur Cray
Winton Serf
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?
Motherboard
Breadboard
Daughter board
Grandmother board
Machine language is
Machine dependent
Difficult to program
Error prone
All of above
First page of Website is termed as-
Homepage
Index
JAVA script
Bookmark
Second Generation computers were developed during
1949 to 1955
1956 to 1965
1965 to 1970
1970 to 1990
The two kinds of main memory are:
Primary and secondary
Random and sequential
ROM and RAM
All of above
Where as a computer mouse moves over the table surface, the trackball is
Stationary
Difficult to move
Dragged
Moved in small steps
One computer that is not considered a portable is
Minicomputer
Laptop computer
Notebook computer
All of above
Which of the following is the most quickly accessible storage?
RAM
Registers
Disks
Pen Drive
A hybrid computer
Resembles digital computer
Resembles analogue computer
Resembles both a digital and analogue computer
None of the above
Which of the following are the best units of data on an external storage device?
Bits
Bytes
Hertz
Clock cycles
Which of the following is also known as brain of computer
Control unit
Central Processing unit
Arithmetic and language unit
Monitor
Magnetic disks are the most popular medium for
None of above
Both of above
Sequential access
Direct access
A hybrid computer
Resembles digital computer
Resembles analogue computer
Resembles both a digital and analogue computer
None of the above
The output quality of a printer is measured by
Dot per sq. inch
Dots per inch
Dots printed per unit time
All of the above
Which device of computer operation dispenses with the use of the keyboard?
Joystick
Light pen
Mouse
Touch