Thursday, April 14, 2016

Fundamentals of Computer Architecture

  • What gives to life to a computer
    • Electricity
    • 0 is for off; 1 is for on - power button - binary system because there are two states
      • 0 & 1 are called bits
      • Combination of 8 bits = 1 byte
      • Unit of computer memory = byte
      • Every symbol on the keyboard is called a character
        • Each character is made up of a sequence of 8 bits - 1 byte
  • High Level Languages
    • Ex: Java, C, C++
    • Kind of like English
    • Has grammatical rules
    • Gives out error messages
  • Complier
    • A systems program that goes through source code and points out any errors and when source code is correct, it will convert the entire source code into binary code
  • Interpreter
    • A systems program that goes through source code and points out any errors and when source code is correct, it will convert the source code statement after statement into binary code
  • Source Code --> Compiler/Interpreter --> Object Code
    • Source Code = HLL (High Level Languages)
    • Object Code = binary code/language, machine code/language - 01010011
  • Systems program
    • Cannot be changed by user
    • Ex: driver
  • Application Program
    • Made for specific application
    • Ex: hospital management, banking system

No comments:

Post a Comment