Hardware introduction

Hardware is also called as computer hardware, is divided into five main sections, namely:

1. CPU (Central Processing Unit)

· CPU is responsible for managing and calculating data.

· CPU is located inside the system unit.

· CPU is the "heart" of the computer.

· CPUs along with other computer devices that exist in the system unit to set the computer work together and

2.      Monitor

Monitor merupakan perangkat keras yang fungsinya menampilkan informasi dan status data secara visual seperti pada televisi. Meskipun bukan pesawat televisi, monitor memiliki resolusi (ketajaman) gambar yang tinggi, sehingga memungkinkan pemakai (user) untuk membaca huruf-huruf yang berukuran kecil pada layar monitor. Monitor komputer juga mempunyai tiga jenis saat ini, yaitu CRT (Catode Ray Tube), LCD (Liquid Crystal Display) dan Plasma.

3.      Equipment Input (Input Devices)

But in this case, the input devices are very many of them, namely:
· Keyboard,The keyboard is the primary input device used by all computers. The keyboard has all the alphabet letters (A - Z, a - z), numbers 0-9 and the additional key (key) special operations, such as the Enter key, Ctrl, Alt etc. Plugs (Port) used by the keyboard is PS / 2 and infra-red (infrared).
· Mouse,Mouse input is a tool used by the user to position the cursor on the screen by clicking the left or right. Move the mouse on a flat surface, then the cursor on the screen will move to follow the mouse movements. In general, the mouse is connected to the computer via the port PS / 2 and some are already using an infrared port or infrared.
· Scanner,To move the picture or text into a computer (in digital form) so it can be used as necessary.
4. Equipment Storage (Storage Devices)
· Ploppy Disk Drive, floppy disk player for storing and reading data (an image or text) from a diskette.· CD-RW / DVD-RW Drive storage media that can only be read, and which has a capacity of (a) of the disc-shaped.· Ploppy Disk, commonly known as "floppy", which is a tool to store data from computers that are small (less than 1:44 Mb).
Blank · CD / DVD Blank, a place to store the data in the form of a CD with a capacity of (a) a fairly large storage.
· Hard Disk, a place to store data in a computer with a capacity of (a) large memory and high speed.
5. Equipment Output (Output Devices)
· Printer, a tool to print a work of either text or images. Printer there are 3 kinds:$ Dot Matrix Printer, the printer with the puncture pin into the ribbon.$ Printers Ink-Jet, a printer with small beads of ink.$ Laser Printer, laser printers and toner (toner), good printing quality, high-speed, and the price is relatively expensive.
· Speaker, to make a sound (audio), there are usually a pair of 2 (two) speakers (left and right).But some are saying that the computer hardware can be summed up into three main sections, namely:
· Input Unit.Is part of the computer hardware that serves as a tool to enter data into computers. Input devices are very often we meet, among others, keyboard, mouse, scanner, and so forth.
· Processing Unit or CPU.Is the heart of the computer do the work of such key calculation logic, control, and storage. The main device in the form of processors and chip contained on the motherboard.
· Output Unit.Is hardware that has the function to present the results of the output of the process on the computer. Forms of output devices include speakers, printers, projectors, etc..
- BootingBooting is the process to enable the computer system ready for use until the computer user to execute commands. There are two types of booting, ie cold boot and warm boot.
1. Cold BootIs a process to enable the computer system for the first time from power off state, by pressing the Power button present on the CPU.
2. Warm BootIs to enable the computer system in a state still alive (on) by pressing the Ctrl + Alt + Del simultaneously, or by pressing the Reset button on the CPU ..