Explanation

• CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart.
• Its main purpose is to distinguish human users from automated bots.
• It helps protect websites against spam, fake registrations, and automated attacks.
• Common CAPTCHA tests include selecting images, identifying distorted text, and completing simple verification tasks.

Last verified on 09-10-2026

Explanation

• Pixel printer is not a standard type of printer.

Additional information:

• Laser printer uses laser technology and toner to print documents.
• Dot matrix printer prints by striking pins against an ink ribbon.
• Inkjet printer sprays tiny droplets of ink onto paper.

Last verified on 09-10-2026

Explanation

• Hybrid computer processes both analog and digital signals.
• It combines the features of analog and digital computers.
• Used in medical equipment, scientific research, and industrial systems.

Explanation

• Machine language is the basic language directly understood by the computer's CPU.
• It uses binary digits (0 and 1).
• The basic components are instructions and data.
• Instructions tell the CPU what operation to perform.

Explanation

• First computer program: Ada Lovelace’s algorithm (1843) for Charles Babbage’s Analytical Engine.
  • First widely used high-level programming language: FORTRAN (1957).
  • Machine Language: The earliest machine-level programming language, using binary 0s and 1s.