Computer is a kind of intelligent electronic equipment, and its basic components include five basic components: arithmetic unit, memory, controller and input and output equipment. This paper will introduce the basic knowledge of computer, including CPU, operation code, ASCII code, binary conversion, software system, bus, modern society and so on.

cpu

CPU is the core component of the computer, which is responsible for controlling the operation of the computer and processing data.

Opcode and operand

The operation code represents the operation function to be completed, and the operand represents the object of the operation.

ASCII code

The standard ASCII code usually occupies 1 byte and is coded with 7 binary digits, so it can represent 128 different symbols at most.

Hexadecimal conversion

Convert101111to decimal 749, octal 1355 and hexadecimal 2ed.

software system

The software system of a computer consists of system software and application software.

tree trunk

The bus of computer is divided into three categories: address bus, data bus and control bus.

modern society

Government, non-governmental organizations and the public are the three elements of modern society.