Explanation

• CPU: The brain of the computer.
• Full Form: Central Processing Unit.
• Function: Processes data and executes instructions.
• First Commercial CPU: Intel 4004.
• Released: 1971 by Intel.
• Key Designer: Federico Faggin.

Last updated by NA ON 16-09-2026

Explanation

• RAM is categorized as volatile and temporary (or primary / main) memory
• It means its data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• MICR stands for Magnetic Ink Character Recognition.
• It is a technology used mainly in the banking industry.
• It helps machines read and process checks quickly.

Last updated NA on 10-09-2026

Explanation

• Modem is a computer hardware device used for communication over a network.
• Modem stands for Modulator-Demodulator.
• A modem converts digital data into signals suitable for transmission.
• It also converts incoming signals back into digital data.
• Modems are commonly used to provide Internet connectivity.

Last verified on 15-09-2026

Explanation

• Junk mail is also called spam.
• The name comes from an old Monty Python comedy sketch.
• It is commonly used for ads, scams, or fake promotions.
  

Additional information:

• Spoof means pretending to be another sender (email spoofing).
• Email services use spam filters to block junk mail automatically.