This figure shows a more schematic version of a desktop computer, which makes it easier to point out the essential hardware components.
The computer case contains a power supply unit (#6) to convert general-purpose electricity to direct current for the other components. The most critical component is the motherboard (#2), a plastic board on which several essential components are mounted. This includes the central processing unit, or CPU, (#3), the main memory (#4), and expansions slots (#5) for other hardware components. The internal hard disk drive (#8) serves as the mass storage device for data files and software applications. An optical disk drive (#7) makes it possible to read from and write to CDs and DVDs. Other hardware components typically found inside the computer case (but not shown in the figure) are a sound card, a video card, and a cooling mechanism, such as a fan.
A computer system also needs input devices, such as a keyboard (#9) and a mouse (#10). To interact with a user, a computer system also needs a display device, such as a monitor (#1).
This figure shows a more schematic version of a desktop computer, which makes it easier to point out the essential hardware components.The computer case contains a power supply unit (#6) to convert general-purpose electricity to direct current for the other components. The most critical component is the motherboard (#2), a plastic board on which several essential components are mounted. This includes the central processing unit, or CPU, (#3), the main memory (#4), and expansions slots (#5) for other hardware components. The internal hard disk drive (#8) serves as the mass storage device for data files and software applications. An optical disk drive (#7) makes it possible to read from and write to CDs and DVDs. Other hardware components typically found inside the computer case (but not shown in the figure) are a sound card, a video card, and a cooling mechanism, such as a fan.A computer system also needs input devices, such as a keyboard (#9) and a mouse (#10). To interact with a user, a computer system also needs a display device, such as a monitor (#1).
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