ROM

The ROM can be programmed using a programmer and then it acts as a "read only" mobile device. This device is used as a textbook for the CPU in the computer and is called ROM BIOS. It stores all the basic information in the programming system as well as POST (Power-On Self-Test) sequences. AMIBIOS and AWARD BIOS are the most common types of ROM BIOS ROM: - PROM (Programmable Read Only Memory) - EPROM (Erasable and Programmable Read Only Memory) - FLASH ROM - EEPROM (Electrical EPROM) - EAPROM (Electric Rewrite ROM), DVD-ROM I / O devices: In addition to passive memory devices, there is a certain control system that assists the CPU in performing various operations. These are referred to as "I/O devices. These devices include interrupt controllers, timers, ports, DMA controllers, floppy controllers, CRT controllers, etc. Bus expansion slots: these are the means through which each of the computers The type of communication required between devices is described below, the type described below. MCA BUS (Micro Channel Architecture): The MCA bus, available in 16-bit or 32-bit versions.This is a computer developed in the new production line is called PS/2 (Personal System 2.) The clock speed is slightly faster (10 MHz, not 8 MHz.) EISA bus: EISA has a 32-bit address and data bus and a 10 MHz clock speed VL bus/VESA local bus: this is the place to locate, It is a 32-bit bus CPU, hence its name.Therefore, it can support high bus speed (CPU).PCI bus: PCI has many advantages over other types of buses.First, it supports 64-bit and 32-bit data Therefore, it can be used in both 486 and Pentium-based systems.PCI can run at speeds up to 33 MHz and the advantages of CPU are isolated.Intel developed this bus.PCMCIA (PC memory International Association): PCMCIA was originally designed to expand memory and process computers. PCMICIA's bus width is only 16 bits, but its method is a 32-bit version. There are three types of cards, namely - type 1 (3.3 meters thick) - with For memory cards - Type 2 (5 mm thick) - For modems and network adapters - Type 3 (10.5 MM0 thick) - For the most common applications, such as PC hard disk cards, add-in cards: these cards are inserted into the motherboard, motherboard ( One, inside the CPU and RAM / ROM BIOS. Separately perform specific functions, such as the peripheral interface of the mouse, etc. The motherboard, the monitor and other additional components will be discussed below. Display Adapters: There are several types of motherboards and monitors for these interfaces. card.