Introduction to programming hardware

01 summary

02 computer hardware

feng · Neumann architecture

 

Every computer has an internal clock , The clock emits electronic pulses at a fixed speed . The faster the clock goes , In giving
The more instructions executed in a given period of time . The unit of measure of speed is Hertz ( 1Hz It's equivalent to... Per second 1 A pulse
blunt . With CPU The speed is increasing , At present Gigahertz ( To describe ）. 1khz = 1024Hz

The first one CPU There's only one core ( . The core is the part of the processor that reads and executes instructions . A multi-core
CPU It's a component with two or more independent cores . Can increase CPU Handling capacity of .

The storage device

1. disc drive     Each computer has at least one hard drive . Hard disk (hard disk） For permanent The preservation of the Data and procedures
2. Optical drive (CD and DVD)  CD It has a capacity of 700MB .DVD It has a capacity of 4.7GB
3. USB Flash drives

Memory

One 0 Or a 1 Stored as a bit (bit )), The smallest unit of storage in a computer .
Computer Medium is The most basic storage unit is bytes (byte) . Each byte consists of 8 Bits make up .

Memory Also called Random Access Memory, RAM ))： It consists of an ordered sequence of bytes , It is used to store programs and data needed by programs .

One A program and its data are being CPU It must be moved to the computer's memory before execution .

Input/output device

Common input devices ： keyboard （ keyboard ） And mouse mouse
Common output devices ： Monitor （ monitor ） And printers printer

Communication equipment

operating system

web

 

The world wide web is a collection of numerous web sites and pages , Together they form The Internet Internet Most importantly Part of （ The Internet also includes e-mail 、 Usenet And newsgroups ）. It's actually a collection of Multimedia , It's made up of hyperlinks . We usually watch it through the Internet browser , It's the content of the world wide web .

  Occupation development

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