HARDWARE AND SOFTWARE.pptx
- 2. INTRODUCTION • A computer is an electronic device that accept data (input) and process data arithmetically and logically produce information (output). • It is divided into two main categories • Hardware • Software
- 3. HARDWARE • Hardware is the physical aspect of computers, telecommunications and other devices . • It includes not only the computer proper but also the cables, connectors, power supply units and peripheral devices such as the keyboard, mouse, audio speakers, and printers.
- 4. TYPES OF HARDWARE • Internal hardware • Internal hardware is also called components. It includes • CPU • Motherboard • RAM • ROM
- 5. CENTRAL PROCESSING UNIT (CPU) • It is the brains of the computer. • Most of calculations take place here. • Two typical components of a CPU are arithmetic logic unit (ALU) control unit (CU).
- 6. MOTHERBOARD • Is the main circuit board of a microcomputer . • It contains the CPU, memory, expansion slots and all the controllers required to controls standard hardware devices.
- 7. RANDOM ACCESS MEMORY (RAM) • RAM is the place in a computer where the operating system, application programs, and data in current use are kept. • It is a temporary memory and can be compared to a person’s short-term memory.
- 8. READ ONLY MEMORY (ROM) • It is a technology that allows you to write data only once. After the data has been written you can read it an unlimited number of times.
- 9. INPUT HARDWARE • Input hardware consists of external devices by which we give information and instructions to the computer • Common input hardware • Keyboard • Mouse • Scanner
- 10. KEYBOARD • The set of typewrite like keys that enables you to enter data into a computer
- 11. MOUSE • A device that controls the movement of the cursor or pointer on a display screen.
- 12. SCANNER • A device that can read text or illustrations printed on paper and translate the information into a form the computer can use.
- 13. OUTPUT HARDWARE • Output hardware consists of internal and external devices that transfer information from the computers CPU to the computer user. • Common output hardware are: • Monitor • Printer • Speaker
- 14. MONITOR • A display screen used to present output from a computer, video camera, VCR or other video generator.
- 15. PRINTER • In computers a printer is a device that accepts text and graphic output from a computer and transfer the information to paper.
- 16. SPEAKER • Speaker or headphones to an output port to hear the audio produced by the computer.
- 17. CONNECTING HARDWARE • Connecting device allow hardware devices to communicate with each other . • Common devices are: • Modern • LAN Card
- 18. MODERN • Modern connect a personal or portable computer to dial-up networks through a regular telephone line.
- 19. LAN CARD • A local area network (LAN) card is used to provide wireless internet access to computer users in home or roaming networks.
- 20. STORAGE HARDWARE • A computer storage device is any type of hardware that stores data. Some common storage devices are • Hard Disc • Floppy Disc • CD ROM
- 21. HARD DISC • A magnetic disk on which you can store computer data. The term hard is used to distinguish it from a soft or floppy disk.
- 22. FLOPPY DISC • A flexible plastic disk coated with magnetic material and covered by a protective jacket used primarily by computers to store data magnetically
- 23. CD ROM • A CD-ROM is a CD that can be read by a computer with an optical drive.