Computers - HW 2.

Computers - HW 2.

6. What is the main memory used for?
The programs and data must be loaded into it in order to be processed. Thus, when the user runs an application, the microprocessor looks for it on secondary storage devices (disks) and transfers a copy of theapplication into the RAM area. RAM (random access memory) is temporary, it means that when the computer is turned off its information is lost. However, the ROM section (read only memory) is permanent andcontains instructions needed by the processor.

7. Can you add any boards to a modern computer?
Most of today’s computers have internal expansion slots that allow users to install adapters or expansion boards.

8. Do you know any peripherals?
Peripherals are physical units attached to the computer. They include:
(a) storage devices - such as floppy, hard or optical disks - provide a permanent storage for both data and programs,
(b) input devices - such as the mouse or the keyboard - enable data to go into the computer’s memory,
(c) output devices - such as monitor or printer - enable us to see the results of an operation in a written or printed form. Among peripherals also belong modems (for connecting to a phone line), fax machines, fax machines, scanners and other devices.