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ict(information technology) Presented to: Sir IMDAD ULLAH Presented by: Zeeshan Haider Rashda Nawaz Zainib Ali Sana Kiran Awais Akram Maria javed Department of IT Institute of computing Bzu Multan BZUPAGES. COM
to. Pic: Components of system BZUPAGES. COM
A Computer. . takes input Ø processes it according to stored instructions Ø produces results as output Ø If necessary store the data for future use Ø BZUPAGES. COM
Components of Computer Systems Ø Ø Ø Keyboard Display System Unit Storage Printer BZUPAGES. COM
=)The major hardware components of a computer system are: Processor Main memory Secondary memory Input devices Output devices BZUPAGES. COM
Input Systems INPUT Ø Keyboard » Most common input device » QWERTY BZUPAGES. COM
Input Systems INPUT Mouse » Cursor manipulation Device » Trackball v Mouse Trackball BZUPAGES. COM
Input System Touch Screens(common device) BZUPAGES. COM
Input Systems INPUT Bar Code Readers Ø Barcode Reader Barcodes BZUPAGES. COM
Input Systems Camera Systems(common device) § Video conferencing BZUPAGES. COM
Output Systems LCD » LCD (Liquid Crystal Display) » CRT (Cathode Ray. Tube) » Music BZUPAGES. COM Music System
Output Systems • Modems – Modulator-Demodulator – Allows computers to communicate over telephone lines BZUPAGES. COM
Output Systems Hard Copy Ø Printer A printer is an output device that’s prints charters symbols & graphics on papers the printer o/p is called hard copy. BZUPAGES. COM
Storage Systems RAM - Random Access Memory Read/Write Memory Volatile Ø ROM - Read Only Memory Non-volatile Won’t disappear when power is off Ø ROM RAM BZUPAGES. COM
Storage Systems Optical Disks § Digital code read by laser § 650 Mbytes in a 4. 75” plastic platter § CD ROM; Erasable Disks Ø BZUPAGES. COM
Storage Systems Magnetic Disk § A circular platter coated with magnetic Hardisk material Ø Floppy Disk Ø Hard Disk Ø Floppy BZUPAGES. COM
System Unit System unit is a box that ‘s contains different components of computer system. Most storage devices memory processor card , posts& connectors reside inside the system unit. BZUPAGES. COM
Components of System unit Mother Board CPU § ALU § CU BZUPAGES. COM
Mother Board It is most important circuit board in system unit It contains different chips BZUPAGES. COM
CPU Two parts of CPU Ø ALU (Arethimetic Logic Unit) Ø CU (control unit) BZUPAGES. COM
ALU Arithmetic Unit of ALU performs basic arithmetic function such as subtraction, multiplication, addition, division v Control Unit it acts like a supervisor of the computer. It does not execute instruction by itself. It controls and coordinates all activities of computer system v BZUPAGES. COM
Thanks…! BZUPAGES. COM
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