The latest PC keyboards use a circuit that senses the movement by the change in its capacitance,
Capacitance keyboard
Mechanical keyboard
Qwerty keyboard
Dvorak keyboard
Correct Answer :
A. Capacitance keyboard
Related Questions
Which of the following is not valid statement?
Hard is referred to mean something temporary
Hard is used to mean something tangible
Soft is used to mean something permanent
Soft is used to mean something tangible
The number of records contained within a block of data on magnetic tape is defined by the
Block definition
Record contain clause
Blocking factor
Record per block
Which device of computer operation dispenses with the use of the keyboard?
Joystick
Light pen
Mouse
Touch
A program that performs a useful task while simultaneously allowing destructive acts is
Worm.
Trojan horse.
Virus.
Macro virus.
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
DOS stands for
Disk Operating System
Disk operating session
Digital Operating System
Digital Open system
A name or number used to identify a storage location is called
A byte
A record
An address
All of above
Which of the following is not a primary storage device?
Magnetic tape
Magnetic disk
Optical disk
All of above
The ALU of a computer normally contains a number of high speed storage element called
Semiconductor memory
Registers
Hard disks
Magnetic disk
The capacity of 3.5 inch floppy disk is
1.40 MB
1.44 GB
1.40 GB
1.44 MB
Office LANS, which are scattered geographically on large scale, can be connected by the use of corporate
CAN
LAN
DAN
WAN
John Napier invented Logarithm in
1614
1617
1620
None of above
A computer consists of
A central processing unit
A memory
Input and output unit
All of the above
WAN stands for
Wap Area Network
Wide Area Network
Wide Array Net
Wireless Area Network
RAM is used as a short memory because it is
Volatile
Has small capacity
Is very expensive
Is programmable
The process of communicating with a file from a terminal is
Interactive
Interrogation
Heuristic
All of the 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
ALU is
Arithmetic Logic Unit
Array Logic Unit
Application Logic Unit
None of above
Software in computer
Enhances the capabilities of the hardware machine
Increase the speed of central processing unit
Both of above
None of above
Which of the following is not a primary storage device?
Magnetic tape
Magnetic disk
Optical disk
All of the above
Which of the following contains permanent data and gets updated during the processing of transactions?
Operating System File
Transaction file
Software File
Master file
The word length of a computer is measured in
Bytes
Millimeters
Meters
Bits
Which of the following are the best units of data on an external storage device?
Bits
Bytes
Hertz
Clock cycles
Which unit is known as nerve center of computer?
ALU
CU
Memory
Registers
Which unit holds data permanently?
Input unit
Secondary storage unit
Output Unit
Primary Memory Unit
Which of the following is used for manufacturing chips?
Control bus
Control unit
Parity unit
Semiconductor
The earliest calculating devices are
Abacus
Clock
Difference Engine
None of these
What is an interpreter?
An interpreter does the conversion line by line as the program is run
An interpreter is the representation of the system being designed
An interpreter is a general purpose language providing very efficient execution
None of the above
Bit stands for
Binary digits
bit of system
a part of byte
All of above
A device invented by Dr. Bobeck in 1966, for mass storage of data is
Punched paper tape
Magnetic bubble storage
Magnetic tape
Magnetic disk