5 .the function of these items.
1. scanner
The function of scanner is as a digital device that converts document and photographic prints to digital images ,which can be sent to a computer ,printer ,flash drive or email address.
2. Printer
The function of printer is to turn digital data into printed media .this could be text, or it could ce graphic output.
3. ATM
The function of ATM is as electronic cash machine. An electronic machine that enables cotumers to withdraw paper money or carry out other banking transactions on insertion of an encoded card
4. PDA (personal digital assistant)
The function of PDA is as cellular phone, fax sender, Web browser and personnal organizaer PDA may also be refered to as a palmtop ,hand-held computer or pocket computer. forecasting climate research, molecular modeling ,physical simulation ,cryptanalysis,etc.
7. Mainframe computer
The function of a mainframe computer are bolk data processing,centralized Computing and platfroms for e-commerce hosting and development.
8. Bancodes
Barcodes is used to list things like price or type of an item in a store , but it can be used to store any kind of information theoreticaly.
9. Swipe card
The function of swipe card is to read the magnetic of the card ,as a credit ,atm card ,etc.
10.Memory
6.
1. The cpu is large chip inside the computer
2. Data always flows from the cpu to the address bus. 3. The cpu can be divided into three parts.
4. Data flows between the cpu and memory
5. Peripherals are devices inside the computer but linked across it. 6. the signal moves into the VDU screen from one side to the other. 7. The cpu puts the address into the address bus.
8. The cpu canfetch data from memory into the data bus.
7.PROBLEM-SOLVING
Capacity = CD-RW Drive
Speed = Extra memory module
Protection from damage due to power failure=APC 1400 smart-UPS
Net work connection = 3Com Yers next-Business-Day-site service
9.WRITING
1. Shut down your computer by choosing shut down from the apple menu or the special menu.
2. Unplug all the cables except the power cord from your computer.
3. If there are security screws on the vertical plate on the back of the computer ,remove them with a philips screwdriver.
