Now computers are need to world activity circulation. So technology of computer always can to use in the database circulation management in the company for management goverment management. The word computer used to mean a person who computes. In current language, a computer is any device used to process information according to a well-defined procedure.The term bug derives from hardware engineering jargon, which it refers to errors in hardware.
When considering modern computers, their most notable characteristic that distinguishes them from earlier computing devices is that, given the right programming, any computer can emulate the behaviour of any other (though perhaps limited by storage capacity and at different speeds), and, indeed, it is believed that current machines can emulate any future computing devices we invent (though undoubtedly more slowly). In some sense, then, this threshold capability is a useful test for identifying "general-purpose" computers from earlier special-purpose devices.
In the last 20 years or so, however, many household devices, notably including video game consoles but extending to mobile telephones, video cassette recorders, PDA's and myriad other household, industrial, automotive, and other electronic devices, all contain computer-like circuitry capable of meeting the above Turing-completeness requirement (with the proviso that the programming of these devices is often hardwired into a ROM chip which would need to be replaced to change the programming of the machine).
The primary storage contains data that are actively being used (for example, the programs currently being run and the data they are operating on). It is typically high-speed, relatively small, is often (but not always) volatile. It is sometimes referred to as Main Memory.
When considering modern computers, their most notable characteristic that distinguishes them from earlier computing devices is that, given the right programming, any computer can emulate the behaviour of any other (though perhaps limited by storage capacity and at different speeds), and, indeed, it is believed that current machines can emulate any future computing devices we invent (though undoubtedly more slowly). In some sense, then, this threshold capability is a useful test for identifying "general-purpose" computers from earlier special-purpose devices.
In the last 20 years or so, however, many household devices, notably including video game consoles but extending to mobile telephones, video cassette recorders, PDA's and myriad other household, industrial, automotive, and other electronic devices, all contain computer-like circuitry capable of meeting the above Turing-completeness requirement (with the proviso that the programming of these devices is often hardwired into a ROM chip which would need to be replaced to change the programming of the machine).
The primary storage contains data that are actively being used (for example, the programs currently being run and the data they are operating on). It is typically high-speed, relatively small, is often (but not always) volatile. It is sometimes referred to as Main Memory.