Explanation

Abacus was the first mechanical calculator

Abacus was invented by Tim Cranmer.

Abacus was invented in 1962.

Explanation

• Encryption is used to protect data and passwords.
• Process: Converts data into a secret code (ciphertext).
• Key: Requires a decryption key to read.
• Data protection: At rest and in transit.
• Decryption: Converts ciphertext into readable data.

Last updated on 30 Oct 2026

Explanation

The first version of Windows, released in 1985, was simply a GUI offered as an extension of Microsoft's existing disk operating system, or MS-DOS.

Explanation

The ALU is the main processing unit of a CPU, responsible for performing all arithmetic and logical operations.

It works alongside other components like registers and cache to execute instructions efficiently.

Explanation

• The process of dividing the disk into tracks and sectors is called formatting.
• In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc.

Last updated 09 Nov 2026 by NA

Explanation

Explanation

Permanent memory built into a computer is known as Read-Only Memory (ROM),

Which stores essential startup instructions and retains data even when the power is turned off. 

Explanation

ARPA stand for Advanced Research Projects Agency.

ARPANET was the basis of the Internet.

ARPANET Concept first published in 1967.

ARPANET was developed by the U.S.A.

Explanation

In May 2022, Frontier Supercomputer of USA beat Japan`s Fugaku to become world fastest supercomputer.

Explanation

A nibble can have 16 possible values due to the four bits that are the same as one hexadecimal.

In computer architecture, 8-bit integers or other data units are those that are 8 bits 

Unit of: digital information, data size

Unit system: unit derived from bit

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