English: A computer "complete" computer consisting of hardware, operating system (main software) and peripheral equipment required and used for "complete" operation may be called a computer system. This term can also be used for a group of computers that are connected and operating together, namely a computer network or a cluster of computers.

Vietnamese: Một máy tính "hoàn chỉnh" bao gồm phần cứng, hệ điều hành (phần mềm chính) và thiết bị ngoại vi được yêu cầu và sử dụng cho hoạt động "hoàn chỉnh" có thể được gọi là hệ thống máy tính. Thuật ngữ này cũng có thể được sử dụng cho một nhóm máy tính được kết nối và hoạt động cùng nhau, cụ thể là một mạng máy tính hoặc một cụm máy tính.

The computer is a modern device that has made life easy and simple. It has the ability to get things done in a short time. It can do many people's jobs in less time. It was very useful for maximum efficiency. The first computer was a mechanical calculator by Charles Babbage. A computer works successfully using its hardware and being installed with full software applications. Other accessories for the computer are the keyboard, mouse, printer, CPU, and UPS. The data we install on the computer to use is called input data and the device is the input device, and the data that we use externally like printers and other devices is called. Is the output data and the device is the output device. The input data is converted to information that can be stored and changed at any time. Computers are all-around equipment for storing data for use in different fields. We can shop, replace our electricity bills, water bills, video chat, text messages, send our e-mails anywhere in the world, and many activities online using the Internet. The computer is truly a very convenient device.