Important concepts of computer

Keyboard Keys

Important concepts of computer

  1. Alpha Numeric – A to Z, 0-9
  2. Function Keys – F1 to F12
  3. Modifier Keys – Ctrl, Alt, Shift
  4. Cursor Keys – Home,  Page up,Page Down, Insert ,Tab,Backspace,  Delete, Enter, Space Bar
  5. Toggle Keys – Lock Key, Caps Lock, Scroll
  6. Special Keys – Esc, Print Screen , Window

Types of Computer Montors

  1. CRT (Cathode Ray Tube) : These monitors are highly reliable and efficient, and are capable of generating a resolution of up to 2048 x 1536 pixels, thereby providing a clear picture 
  2. LCD (Liquid Crystal Display) : Liquid crystal display, also known as liquid crystal diode. These monitors are compact, lightweight, and do not consume much desk space
  3. LED (Light-Emitting Diodes) : LED monitors are said to use much lesser power than CRT and LCD.

4 Popular type Mouse Devices

  1. Mechanical Mouse:  The ball mouse was the first type of mouse created and this device is integrated with a metal or rubber ball which spin in all directions
  2. Trackball Mouse:  The trackball mouse is a pointing device consisting of a ball held by a socket containing sensors to detect the rotation of the ball.
  3. Optical Mouse Unlike the traditional mouse, they do not have a mouse ball.
  4. Wireless Mouse: Its capability to provide connectivity without cables. The lack of wires provide free movement and these mice have high sensitivity

Memory Unit

Important concepts of computer

1 Bit = Binary Digit

8 Bits = 1 Byte

Kilobyte (KB)

1024 Bytes = 1 KB (Kilo Byte)

Megabyte (MB)

1024 KB = 1 MB (Mega Byte)

GigaByte (GB)

1024 MB = 1 GB(Giga Byte)

TeraByte (TB)

1024 GB = 1 TB(Terra Byte)

PetaByte (PB)

1024 TB = 1 PB(Peta Byte)

Exa Byte (EB)

1024 PB = 1 EB(Exa Byte)

Zetta Byte (ZB)

1024 EB = 1 ZB(Zetta Byte)

Yotta Byte (YB)

1024 ZB = 1 YB (Yotta Byte)

1024 YB = 1 (Bronto Byte)

1024 Brontobyte = 1 (Geop Byte)

Geop Byte is The Highest Memory Measurement Unit!!!

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