Latest Computers General Knowledge(GK) Questions and answers

1 .

Which was the first commercial computer built by M.V. Wilkies.

A)

Super computer

B)

Mainframe

C)

LEO

D)

None of the above

Correct Answer : LEO

The prototype LEO I was modelled closely on the Cambridge EDSAC. Its construction was overseen by Oliver Standingford, Raymond Thompson and David Caminer of J. Lyons and Co.

2 .

Which of the following is directly controlled from a keyboard.

A)

Magnetic disk

B)

Magnetic tape

C)

Punched paper tape

D)

Card punch

Correct Answer : Card punch

A punched card (also Card punch or punched-card) is a piece of stiff paper that holds digital data represented by the presence or absence of holes in predefined positions. Punched cards were once common in data processing applications or to directly control automated machinery.

Punched cards were widely used through much of the 20th century in the data processing industry, where specialized and increasingly complex unit record machines, organized into semiautomatic data processing systems, used punched cards for data input, output, and storage. The IBM 12-row/80-column punched card format came to dominate the industry. Many early digital computers used punched cards as the primary medium for input of both computer programs and data.

3 .

Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots?

A)

Leibnitz

B)

Pascal

C)

Babbage

D)

Napier

Correct Answer : Leibnitz

Gottfried Wilhelm Leibniz (b. 1646, d. 1716) was a German philosopher, mathematician, and logician who is probably most well known for having invented the differential and integral calculus (independently of Sir Isaac Newton).

4 .

The first electronic general purpose digital computer built by Mauchly and Eckert called ENIAC did not work on the stored program principle. How many numbers could it store in its internal memory?

A)

20

B)

40

C)

60

D)

80

Correct Answer : 20

5 .

The octal equivalent of the number 11010.1011 is

A)

32.27

B)

32.54

C)

63.51

D)

87.59

Correct Answer : 32.54

6 .

There are historical evidences to prove that abacus was first used in

A)

Japan

B)

India

C)

China

D)

Indonesia

Correct Answer : China

There are historical evidence to prove that abacus was first used in China.

Uses by the blind. An adapted abacus, invented by Tim Cranmer, called a Cranmer abacus is still commonly used by individuals who are blind. A piece of soft fabric or rubber is placed behind the beads so that they do not move inadvertently.

Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in the early 17th century. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as supervisor of taxes in Rouen.

7 .

The difference between memory and storages is that memory is _____ and storage is _____

A)

Slow, Fast

B)

Start, Stop

C)

Permanent, Temporary

D)

Temporary, Permanent

Correct Answer : Temporary, Permanent

The term ‘memory’ refers to the component within your computer that allows for short-term data access. You may recognise this component as DRAM, or dynamic random-access memory. Your computer performs many operations by accessing data stored in its short-term memory.

storage is the component within your computer that allows you to store and access data on a long-term basis. Usually, storage comes in the form of a solid-state drive or a hard drive. Storage houses your applications, operating system and files for an indefinite period. Computers need to write information and read it from the storage system, so the speed of the storage determines how fast your system can boot up, load and access what you’ve saved.

8 .

Which of the following transfers data contained on computer cards to the computer system.

A)

Card sorter

B)

Card reader

C)

Magnetic disk

D)

Magnetic tape

Correct Answer : Card reader

Card reader transfers data contained on computer cards to the computer system.

Card reader. Alternatively referred to as a media card reader, a card reader is a hardware device that lets you read and write data on a memory card such as a multimedia card. Some card readers only have one card slot, and some have multiple card slots for different cards and media.

Insert a memory card into one of the memory card slots. Do one of the following to access your memory card files from your computer: Windows: Select the Computer or My Computer utility, then select the removable disk icon. Mac OS X with a USB connection: Look for the removable disk icon on your desktop, then select it.

A memory card reader is a device for accessing the data on a memory card such as a CompactFlash (CF), Secure Digital (SD) or MultiMediaCard (MMC). Most card readers also offer write capability, and together with the card, this can function as a pen drive.

9 .

The methods used by COBOL to define that structure of a data item in terms of characters, digits, etc. is

A)

Picture

B)

Pointer

C)

Overlay

D)

Password

Correct Answer : Picture

10 .

A type of semiconductor memory that usually has small capacity but very fast access is

A)

PROM

B)

Scratchpad

C)

RAM

D)

ROM

Correct Answer : Scratchpad

Scratch Pad Memory (SPM), also known as scratchpad, scratchpad RAM or local store in computer terminology, is a high-speed internal memory used for temporary storage of calculations, data, and other work in progress.