|
 |
Answer1
|
THE MAGAZINE FOR COMPUTER APPLICATIONS
Circuit Cellar Online
offers articles illustrating creative solutions
and unique applications through complete projects, practical
tutorials, and useful design techniques.
|
|
|
|
 WHAT'S
YOUR ENGINEERING QUOTIENT?
|
Problem 4—What
is meant by the term "Universal Shift Register"?
Answer:
A "Universal Shift Register"
is a synchronous digital circuit that can perform these four basic
operations:
-
Load:
Load a n-bit binary number into the register; e.g., if the inputs
to a 4-bit USR are 1011 then during the next clock, this number
is loaded into the register.
-
Shift Left:
Shift the bits towards the left once. The initial MSB is lost;
e.g., the number previously loaded (1011) becomes 0110 after the
left shift operation.
-
Shift Right:
Shift the bits towards the right once. The initial LSB is lost;
e.g., the number previously loaded (1011) becomes 0101 after the
right shift operation.
-
Hold:
Maintain the previous state of the register during subsequent
clock pulses.
Contributor:
Naveen P N
5-01 —
NEXT Q&A
|
|
|
