Input devices which include keyboards, computer mice, buttons, and touch screens, etc.Ĭomputer programs are designed or written by computer programmers.
#How much is a new most expensive mac computer software#
The software uses the hardware when the user gives it instructions, and gives useful outputs.Ĭomputers are controlled with user interfaces. They only follow the instructions in their software programs. They do mathematical arithmetic very quickly but computers do not really "think". Modern computers are electronic computer hardware. They are used for things such as calculation, listening to music, reading an article, writing, playing games etc
Most people have used a personal computer in their home or at work. Computers are used to control large and small machines which in the past were controlled by humans. Some examples are controlling traffic lights, vehicles, security systems, washing machines and digital televisions.Ĭomputers can be designed to do almost anything with information. Computers do many different jobs where automation is useful. Being able to calculate many times per second allows modern computers to multi-task, which means they can do many different tasks at the same time. Modern computers can do billions of calculations in a second. There are four main actions in a computer: inputting, storing, outputting and processing. The two important parts of a computer are: It responds to a specific instruction set in a well-defined manner and it can execute a stored list of instructions called a program. They range from small computers such as smartphones and laptops, to large computers such as supercomputers.Ĭharacteristics Computers come in different shapes and sizes, depending on the brand and model and purpose.
Most computers are digital, which means that they represent information by using binary digits, or bits. The processor of a computer is made from integrated circuits (chips) that contains many transistors. Computers can be connected together to form a network such as the internet, allowing the computers to communicate with each other. The data is then saved in a storage device, shown on a display, or sent to another computer. Programs usually perform mathematical calculations, modify data, or move it around. A computer program is a list of instructions the computer has to perform. The computer processes or changes the data by following the instructions in software programs. Input of data means to read information from a keyboard, a storage device like a hard drive, or a sensor. Data is information such as numbers, words, and lists.
A computer is a machine that uses electronics to input, process, store, and output data.
0 kommentar(er)
