MICROPROCESSORS

The microprocessor contains all, or most of, the central processing unit (CPU) functions and is the "engine" that goes into motion when you turn your computer on. A microprocessor is designed to perform arithmetic and logic operations that make use of small number-holding areas called registers.

Saturday 21 May 2016

DATA TYPES OF 80386 PROCESSOR

The 80386 supports the following  data types they are

  •  Bit
  •  Bit Field: A group of at the most 32 bits (4bytes)
  •  Bit String: A string of contiguous bits of maximum 4Gbytes in length.
  •  Signed Byte: Signed byte data
  •  Unsigned Byte: Unsigned byte data.
  •  Integer word: Signed 16-bit data.
  •  Long Integer: 32-bit signed data represented in 2's complement form.
  •  Unsigned Integer Word: Unsigned 16-bit data
  •  Unsigned Long Integer: Unsigned 32-bit data
  •  Signed Quad Word: A signed 64-bit data or four word data.
  •  Unsigned Quad Word: An unsigned 64-bit data.
  •  Offset: 16/32-bit displacement that points a memory location using any of the addressing modes.
  •  Pointer: This consists of a pair of 16-bit selector and 16/32-bit offset.
  •  Character: An ASCII equivalent to any of the alphanumeric or control characters.
  •  Strings: These are the sequences of bytes, words or double words. A string may contain minimum one byte and maximum 4 Gigabytes.
  • BCD: Decimal digits from 0-9 represented by unpacked bytes.
  • Packed BCD: This represents two packed BCD digits using a byte, i.e. from 00 to 99.
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