Computer hardware consists of three main parts: the mainframe (the main part), the output device (monitor), and the input device (keyboard and mouse).
And the host computer is the main body of the computer, in the main chassis there are: motherboard, CPU, memory, power supply, graphics card, sound card, network card, hard disk, floppy drive, optical drive and other hardware. Among them, the motherboard, CPU, memory, power supply, graphics card, hard disk is necessary, as long as the host work, these are indispensable.
Hardware refers to the physical equipment in a computer system, including electronic components, circuit boards, monitors, keyboards, mice, printers, hard disks, memory, CPUs and so on.
Hardware is the component of a computer system that is used to input, output, store and process data. As opposed to software, which refers to the programs and data in a computer system that are used to control and manage the operation and use of the hardware. Hardware and software *** with the composition of the computer system, hardware provides the physical support of the computer system, while the software provides the logical support of the computer system, the two are closely related and interdependent.
Difference between hardware and software products:
1, the composition of the different
Hardware, is visible and tangible, it has the form of the material world, do not need other carriers can also be used function. The software, on the contrary, there is no way to directly touch, is composed of electronic world of 0, 1, need a carrier to use (from this point of view, the software is still dependent on the hardware). This structural difference, which is the essential difference between the two, in turn gives rise to the following distinctions.
2, R & D process is different
Software R & D process generally consists of market research, product requirements design, interaction design, visual design, development, software testing. Hardware R & D process includes: market research, product requirements design, material selection, ID design, MD design, electronic design, mold molding, application software development, underlying system development, packaging materials design and production, verification of the whole machine, the first trial production, small batch testing, large quantities of production. Obviously, the hardware development process is more complex and time-consuming.