Composition of e-mail address
An email address consists of a user name and a domain name, which are connected by an "@" symbol.
Binary to decimal
The way to convert a binary number into a decimal number is to multiply the number on each digit by the n power of 2, where n is the number of digits of the digit minus 1, and then add the results.
Characteristics of octal system
Octal number consists of 8 numbers from 0 to 7, and the weight of each number is the integer power of 2 to the third power.
Classification of computer networks
Computer networks can be divided into different types, such as local area network, metropolitan area network and wide area network, among which wide area network is also called World Wide Web.
Basic composition of computer network
A computer network consists of hardware and software, wherein the hardware includes computers and communication equipment, and the software includes protocols and services.
Connection mode of computer network
There are two ways to connect computer networks: point-to-point connection and broadcast connection. Point-to-point connection refers to the direct connection between two computers, and broadcast connection refers to the connection of multiple computers through a central node.
Common network equipment
Common network devices include routers, switches and network cards. They are all indispensable parts of computer network.
Classification of computer memory
Computer memory can be divided into RAM and ROM, where RAM is readable and ROM is read-only.