Intro to CS & Programming by

Binary Number System

9bmd827fhp — 2022-12-05 01:19:49 UTC

A binary number system is one of the four types of number system. In computer applications, where binary numbers are represented by only two symbols or digits, i.e. 0 (zero) and 1(one). The binary numbers here are expressed in the base-2 numeral system.

二进制数系统是四种类型的数系统之一。在计算机应用中，其中二进制数仅由两个符号或数字表示，即0（零）和1（一）。这里的二进制数是用基数2数字系统表示的。

Decimal Number System

9bmd827fhp — 2022-12-05 01:21:50 UTC

A number system that uses a notation in which each number is expressed in base 10 by using one of the first nine integers or 0 in each place and letting each place value be a power of 10.

一种数字系统，使用一种符号，其中每个数字以10为基数表示，在每个位置上使用前九个整数之一或0，并让每个位置的值是10的幂。

Mathematical Operators

9bmd827fhp — 2022-12-05 01:25:26 UTC

+ Addition 加法运算符
- Subtraction 减法运算符
* Multiplication 乘法运算符
/ Division 部门操作员
% Modulus 模数运算符
// Integer Division 整数除法运算符
** Power 电力运营商
= Assignment 赋值运算符

Conditional Operators 条件性操作符

9bmd827fhp — 2022-12-05 01:28:39 UTC

> Greater than 大于运算符
< Less than 小于运算符
>= Greater than equal to 大于等于运算符
<= Less than equal to 小于等于运算符
== Comparison 比较运算符
!= Not equal to 不等于运算符

Boolean Operators 布尔运算符

9bmd827fhp — 2022-12-05 01:30:11 UTC

and 逻辑和运算符
or 逻辑或运算符
not 逻辑非运算符

Variables

9bmd827fhp — 2022-12-05 01:33:24 UTC

A variable, in the context of programming, is a symbolic name given to an unknown quantity that permits the name to be used independent of the information it represents. Variables are associated with data storage locations, and values of a variable are normally changed during the course of program execution.

变量，在编程的背景下，是给未知量的一个符号名称，允许该名称的使用与它代表的信息无关。变量与数据存储位置相关，变量的值通常在程序执行过程中改变。

Integer Datatype 整数数据类型

9bmd827fhp — 2022-12-05 01:34:07 UTC

example myVar = 10

Float Datatype 十进制数据类型

9bmd827fhp — 2022-12-05 01:35:00 UTC

myVariable = 10.345

String Datatype 字符串数据类型

9bmd827fhp — 2022-12-05 01:36:12 UTC

myName = "John Doe"

Boolean datatype 布尔数据类型

9bmd827fhp — 2022-12-05 01:37:03 UTC

myDecision = True