What is read-only-memory, Computer Engineering

Assignment Help:

Q. What is Read-only-Memory?

Read only memory is an illustration of a Programmable Logic Device (PLD) it implies that binary information which is stored within a PLD is specified in some fashion and embedded within hardware. So information retains even when power goes.  

1549_What is Read-only-Memory.png

Figure: ROM Design

Above figure (a) presents block diagram of ROM.  It comprises 'k' input address lines and 'n' output data lines. An m ×n ROM is an array of binary cell arranged in m (2k = m) words of 'n' bits each. ROM doesn't have any data input since write operation is not defined for ROM. ROM is categorized as a combinational circuit and constructed internally with decoder and a group of OR gates. In general a m × n ROM (where m= 2k, k = no. of address lines) will have an internal k ×2k decoder and 'n' OR gate. Every OR gates has 2k inputs that are connected to each of the outputs of decoder.


Related Discussions:- What is read-only-memory

Perfect fundamental logic - artificial intelligence, Perfect fundamental lo...

Perfect fundamental logic - artificial intelligence: However, while it's theoretically  possible to do definite intelligent things (like prove some easy mathematics theorems a

What is a pointer, What is a pointer? The register or memory location t...

What is a pointer? The register or memory location that having the address of an operand is known as a pointer.

Explain a full subtractor using half subtractors, Draw the logic diagram of...

Draw the logic diagram of a full subtractor using half subtractors and explain its working with the help of a truth table Ans: Full Subtractor: It has to take care of repe

What is delegation, What is Delegation? A delegate acts like a strongly...

What is Delegation? A delegate acts like a strongly type function pointer. Delegates can raise the methods that they reference without making explicit calls to those methods. D

Write a program which collects in data samples, Write a program which colle...

Write a program which collects in data samples from a port at 1 ms interval. The upper 4 bits collected data same as mastered and stored in an array in successive locations. ; R

What is managed bean or mbean, A managed bean - sometimes simply referred t...

A managed bean - sometimes simply referred to as an MBean - is a type of JavaBean, developed with dependency injection. Managed Beans are particularly used in the Java Management E

Make an instruction execution feasible, Q. Make an instruction execution fe...

Q. Make an instruction execution feasible? What are the functions that a control unit performs to make an instruction execution feasible? Instruction execution is achieved by e

Explain conditions for the critical section problem solution, What are the ...

What are the properties which a data item should possess to implement a critical section? The Critical Section Problem Solution should satisfy the following conditions: 1.

What is grid computing, (a) What is Grid computing? (b) What are the k...

(a) What is Grid computing? (b) What are the key distinctions between conventional distributed computing and Grid computing? (b) Describe how five features of Grid Computi

What are kinds of processors, Processors can broadly be seperated into the ...

Processors can broadly be seperated into the categories of: CISC, RISC, hybrid, and special purpose.

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