Illustrate the accumulator architecture, Computer Engineering

Assignment Help:

Accumulator Architecture: An accumulator is anespecially designated register which supplies one instruction operand and receives result. Instructions in such machines are usually one-address instructions. The most common early architectures were DEC PDP-8, IBM 7090 etc.

On an Accumulator machine 'C = A + B'can be implemented as:

        LOAD A        // Load memory location A in accumulator

        ADD B          // Add memory location B to accumulator

        STORE C     // Store accumulator value in memory location C

Accumulator Architecture: Pros and Cons

  • Implicit use of accumulator saves instruction bits
  • Result is ready for immediate reuse however has to be saved in memory if subsequent computation doesn't use it right away.
  • More memory accesses needed than stack. Consider a program to do expression:

        A = B * C + D * E.

2162_Illustrate the Accumulator Architecture.png


Related Discussions:- Illustrate the accumulator architecture

Subsequent step in karnaugh map, The subsequent step in Karnaugh map is to ...

The subsequent step in Karnaugh map is to map truth table in the map. Mapping is done by putting a 1 in respective square belonging to 1 value in truth table. This mapped map is us

What are difference between latches and flipflops, What are difference betw...

What are difference between latches and flipflops? Difference : Latches are level-sensitive, while, flipflops is edge sensitive. It means to say edge sensitive that O/p change

Concurrently read exclusively write, Q. Concurrently read exclusively write...

Q. Concurrently read exclusively write? It's one of the models based on PRAM. In this model, processors access the memory location simultaneously for reading whereas exclusivel

Give an example of shortest job next scheduling, Consider the following set...

Consider the following set of jobs with their arrival  times, execution time (in minutes), and deadlines. Job Ids Ar r ival Time E xecuti

Write policy of cache memory, Q. Write Policy of cache memory? If conte...

Q. Write Policy of cache memory? If contents of a block in cache are changed then it's essential to write it back to main memory before replacing it. Write policy determines wh

Does xml replace html, No XML does not replace HTML. Instead, it gives an a...

No XML does not replace HTML. Instead, it gives an alternative which permits you to explain your own set of markup elements. HTML is expected to stay in common use for some time to

How do you track down a transition by name, Question 1: a) How do you ...

Question 1: a) How do you track down a transition by name? b) Why Premiere Pro is considered a non-linear editor? c) Explain clearly the main problem that may arise wh

How many chips will be required in a microprocessor , A microprocessor uses...

A microprocessor uses RAM chips of 1024 × 1 capacity. (i) How many chips will be required and how many address lines will be connected to provide capacity of 1024 bytes. (ii) How

Explain an expression tree with a suitable example, What is an expression t...

What is an expression tree? How an expression is evaluated using an expression tree? Algebraic expressions is as given here a/b+(c-d)e That has an inherent tree-like structure

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