Explanation

• The ALU (Arithmetic Logic Unit) is the core component of the CPU.
• It performs both arithmetic operations (calculations) and logical operations (comparisons).
• Without ALU, a computer cannot process data.
• ALU works together with the Control Unit (CU).

Last verified on 06-05-2026

Explanation

• A plotter is an output device.
• It is used to produce vector graphics, drawings, maps, and engineering designs on paper.
• Plotters are commonly used in CAD (Computer-Aided Design).

Explanation

• An input device is any hardware component used to send data, signals, and commands to a computer. 
• Keyboard: Used to type text and enter commands.
• Mouse: Used to control the cursor and select items.
• Microphone: Used to record sound.
• Scanner: Used to convert physical documents into digital file
  

Last updated by NA on 09-09-2026

Explanation

• Access time is the time required by a computer to locate and access data.
• It is an important measure of the speed of memory or storage devices.
• Lower access time generally means faster data retrieval.

Last verified on 08-09-2026

Explanation

• Multiprocessing means using two or more processors/CPU cores to execute multiple programs or processes simultaneously (at the same time).

• Multitasking generally means running multiple tasks by sharing CPU time.
• Multiprogramming means keeping multiple programs in memory and switching the CPU among them.

Last verified on 08-09-2026