Kaigai Blog living abroad in my twenties

【Lecture3】Computer Systems & Networks

Hardware Infotech

Previous Lecture

CPU

Contents

How the CPU access the instructions on RAM


Source: Computer Hope

  • Step 1: Fetch the instruction
  • Step 2: Decode the instruction
  • Step 3: Execute the instruction

Four components of CPU

  • Clock: The number of cycles your CPU executes per second, measured in GHz (gigahertz).
  • ALU (Arithmetic Logic Unit): コンピュータを構成する基本的な装置の一つで、算術演算(四則演算)や論理演算などの計算を行う装置。
  • Registers: very fast computer memory which are used to execute programs and operations efficiently.
  • CU (Control Unit): The control unit generates control signals for all parts of the processor to coordinate its operation.

How to convert strings into its octal representations

ASCII Table


Perform a logical AND operation on the hex value