What are the logic micro-operations, Computer Engineering

Assignment Help:

Q. What are the Logic Micro-operations?

Logic operations are fundamentally binary operations that are performed on string of bits stored in the registers. For a logic micro-operation every bit of a register is treated as a variable.

A logic micro-operation:

R1 ← R1.R2 specifies AND operation to be performed on contents of R1 and R2 in addition store the results in R1. For illustration if R1 and R2 are 8 bits registers and:

R1 comprise 10010011 and

R2 comprise 01010101

    Then R1 will comprise 00010001 after AND operation.

Some of the common logic micro-operations are AND, OR, NOT or Complement, Exclusive OR, NOR and NAND. In many computers only four: AND, OR, XOR (exclusive OR) and complement micro-operations are implemented.

Let's now discuss how these four micro-operations can be employed in implementing some of significant applications of manipulation of bits of a word like changing some bit values or deleting a group of bits. We are presuming that resultof logic micro-operations go back to Register R1 and R2 comprises the second operand.

We will play a trick with manipulations we are performing. Let's select 1010 as 4 bit data for register R1 and 1100 data for register R2. Why? Since if you see bit combinations of R2 and R1 they represent the truth table entries (read from right to left and bottom to top)  00, 01, 10 and 11. So resultant of logical operation on them will signify which logic micro-operation is required to be performed for that data manipulation. The below table gives details on some of these operations:

R1                                                                    1          0          1          0

R2                                                                    1          1          0          0

2130_What are the Logic Micro-operations.png


Related Discussions:- What are the logic micro-operations

Implement a priority queue, 1. Insert the following characters with their r...

1. Insert the following characters with their respective priorities (shown as ordered pairs) into an empty treap: (K, 17), (F, 22), (P, 29), (M, 10), (N, 15), (L, 26), (G, 13),

For which class address 192.5.48.3 belogs, Address 192.5.48.3 belongs to? ...

Address 192.5.48.3 belongs to? Address 192.5.48.3 belongs to class C.

Intuitively simple - user friendliness, Intuitively Simple - User Friendlin...

Intuitively Simple - User Friendliness This is the degree to which the system operates in congruence with human operation, in effect the machine does what we naturally think i

Explain direct addressing mode with example, Q. Explain Direct Addressing M...

Q. Explain Direct Addressing Mode with example? Direct Addressing Mode A direct operand signifies to contents of memory at an address referred by the name of the variable.

One of the fault base testing techniques, One of the fault base testing tec...

One of the fault base testing techniques is:- Mutation testing is the fault base testing.

What is dot pitch of a CRT, Q. What is Dot Pitch of a CRT? Dot Pitch of...

Q. What is Dot Pitch of a CRT? Dot Pitch of a CRT is the distance between phosphor dots of same colour. In Trinitron screens, the term Slot Pitch is used in place of Dot Pitch

Explain the concept of thread, The Concept of Thread A thread is a sequ...

The Concept of Thread A thread is a sequential flow of control within a process. A process is able to have one or more threads. Threads have their own register-values and progr

Bi polar junction transistor, draw input and output charectoristics of BJT ...

draw input and output charectoristics of BJT and justify CE configuration provides large current amplification

Concept of multithreading, Concept of Multithreading: These troubles incre...

Concept of Multithreading: These troubles increase in the design of large-scale multiprocessors such as MPP as discussed above. Thus, a solution for optimizing this latency should

Cheques vs credit cards, Cheques vs Credit Cards       E-cheques:  E-ch...

Cheques vs Credit Cards       E-cheques:  E-cheques are used for business dealing in e-commerce.  Transactions of these cheques take place on Internet. In this system the elect

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