Hardware, structure, operating of computer with Mr.Toyny Part 5
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In computer has 2 type as thus below
When we think of about memory, some of you may think that it is RAM. Do you know how many type of memory in computer you use? OK let's learn about it.
(Read Only Memory)
- RAM (Random
Picture1 ROM diagram
Picture 2 ROM BIOS,ROM Keyboard
is an IC that has the ability in one reading, but it cannot (easily) be written to. ROM also can be called Permanent Memory. It doesn't need Electromotive force because it has a class of storage media used in computers by itself
Types of ROMs
:Read Only Memory
Memory is a class of storage media used in computers. it can(easily) be read only.
- PROM :
Programmable Read Only Memory
is a class of storage media used in computers. it can(easily) be read only.
- EPROM :
Erasable Programmable Read Only Memory
is memory unit that is developed stead of ROM, allow users to install programs or write data by themselves, but PROM can only be programmed once.
- EEPROM :
is memory unit that has more ability than PROM. It can be erased by exposure to ultraviolet light then rewritten via an EPROM programmer. However, when finish recording, it should typically be covered by a label to prevent accidental erasure..
- FEPROM :
EPROM is Read Only Memory that has quality like EPROM; simply, it can be written and erased data what you don't want. Differently, EEPROM is electrically erased stead of using ultraviolet.
- ROM BIOS
: ROM Basic Input / Output System
is Read Only Memory that has quality like EEPROM, allow the entire ROM to be erased and written by using electric. Differently, FEPROM has more speciality, it is Flash Erasable Programmable Read-Only Memory that can be erased and written more quickly.
is ROM chip that contain fundamental programs for controlling and communicating with other devices in order to have correctly work. ROM BIOS will always be available and will not be damaged by disk failures. It also makes it possible for a computer to boot itself and give preparation for RAM. Next, ROM BIOS will read softwares from CD, and then allow operating system working according to users. Moreover, ROM BIOS also has importance; it can handle fundamental devices. Although ROM BIOS has several types, they have the same work
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