Python Computer Basics

1. What is a programming language?

The media the programmer communicates with the computer.

2. What is programming?

Programmers make computers do what they want to do based on the syntax of a programming language, and the result is a bunch of files.

3, why learn to program?

Let the computer replace human work and become a Slave to mankind.

4, the computer's five major components and functions, the composition of the CPU

① Controller: The computer's control center, equivalent to the human brain.

②: A part that runs arithmetic operations and logical operations.

③ Memory: A part of the data and program used to hold a computer. Main storage (memory bar), external memory (disk, USB memory card), respectively.

④ input Device: The device that helps the computer input has a keyboard, mouse.

⑤ output device: The device that helps the computer output has a monitor, a printer.

Controller + operator + Register = CPU

CPU---X86, the CPU has backward compatibility.

How it works: instruction----decode--Execute

The execution of all software is done by the CPU.

Memory (RAM):

Memory Strips

Advantages: fast access speed,

Cons: Small capacity, temporary storage, power loss

Disk

Advantages: Large capacity, permanent storage,

Cons: Slow access speed

5. Memory type, direct speed and capacity sequence:

Time Storage capacity

1ns Register <1KB

2ns Cache 4MB

10ns Memory 512~2048MB

10ms Disk 200~1000GB

100s Tape 400~800GB

6, a program to want to run from scratch, CPU, memory, hard disk parts of how to work?

1 Charging

2 BIOS detects CPU memory hard disk "COMS

4 Load bootloader.

5 reading the operating system kernel

Python Computer Basics