Distinguish between ROM, PROM, EPROM, EEPROM., Computer Engineering

Assignment Help:

Distinguish between ROM, PROM, EPROM, EEPROM.

Ans:

ROM: It also called Read Only Memory is a Permanent Memory. The data is permanently stored and cannot be changed in Permanent ROM. This can only be read from the memory. There cannot be a write operation since the given data is programmed in the device through the manufacturer or the user. It is a Non-volatile memory. Some illustrations of ROM are pre-programmed instructions, conversion tables etc.

PROM: It also called Programmable Read Only Memory permits user to store the data. An instrument PROM programmer is utilized to store the desired data. The process utilized is opening the links at bit locations by using high current (such process is termed as burning in). Once such process has been done, then the data is permanently stored and changes in this impossible.

EPROM: The meaning of this term is Erasable PROM. This can be reprogrammed through first erasing the existing program. EPROM uses N-MOSFET array along with isolated gate structure.  The isolated transistor gate has no electrical link and it can store an electrical charge indefinitely. The data bits in EPROM memory array are represented through presence or absence of charge. Erasure is achieved with removing the gate charge. It can be UV EPROM or EEPROM.

The term UV EPROM implies Ultra Violet Erasable PROM. Erasure is achieved though using ultra violet light. The light passes throughout a window in the IC package to the chip where there are stored charges. Hence the stored contents are erased.

EEPROM: It means Electrically Erasable PROM. In EEPROM memory device, the erasure and programming is done through electrical pulses.


Related Discussions:- Distinguish between ROM, PROM, EPROM, EEPROM.

Explain language processor development tools by diagram, Explain Language ...

Explain Language Processor Development Tools (LPDTs) through schematic diagram. LPDT that is Language processor development tools focuses upon generation of the analysis phase

Determine the implementation of jit inventory system, Discuss in detail the...

Discuss in detail the features, benefits and implementation of JIT inventory system. JIT - Just in Time inventory systems - meaning, origin, need for JIT, benefits, Use of JIT

Design a model for object oriented development, Design a model for object o...

Design a model for object oriented development The model for object oriented development could be shown as in Figure. It could be classified as dynamic / static and physical /

Illustrate about sharing of structure and behaviour, Illustrate about Shari...

Illustrate about Sharing of Structure and Behaviour  One of the reasons for the popularity of object-oriented techniques is that they promote sharing at different levels. Inher

Define process, Define Process. Process: It is a program in executi...

Define Process. Process: It is a program in execution; process execution should progress into sequential fashion. Process contains: program counter stack dat

Illustrate the text area, specifies a form field where user can enter large...

specifies a form field where user can enter large amounts of text. In most respects, works like an field. It can have a name as well as a def

Kirchoff''s voltage law , Kirc hoff's Voltage Law   The sum ...

Kirc hoff's Voltage Law   The sum of all the voltage drops around a closed circuit loop will add to zero  V1+(-V2)+(-V3)+(-V4)= 0

Engineering applications, Engineering Applications A few of the enginee...

Engineering Applications A few of the engineering applications are: Airflow circulation over aircraft machinery, Simulations of simulated ecosystems. Airflow c

How does the computer execute a program, Let's attempt to answer a fundamen...

Let's attempt to answer a fundamental question: 'How does the Computer execute a Program?' Let's describe this with the help of an example from higher level language domain. Pr

What is an "on request field" statement, What is an "on request Field" stat...

What is an "on request Field" statement? ON REQUEST The ABAP/4 Module is known as only if the user has entered the value in the field value as the last screen display .Th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd