1. The time it takes for a logic gate to respond to input change is ____________
ID: 2988248 • Letter: 1
Question
1. The time it takes for a logic gate to respond to input change is ____________
2. Give one reason why CMOS and TTL gates cannot be simply connected.
3. The number of different states that a counter cycles through before repeating is the ______ of the counter.
4. A ____ generally changes one energy form to another.
5. A ____ is a device that can be used to check the logic level on a pin of a counter.
6. Which of the following is not performed by a counter?
a. count events, b. divide frequency, c. serve as a seven-segment display, d. serve as a memory unit
7. If the CLR input of a shift-register has a bar over it (inverted), then it is active _____
8. consider a 4-bit counter made with JK flip flops with preset and clear inputs. Describe the changes/attributes that need to make the counter reset after counting to 1001. Be sure to state any assumptions that are made.
9. Explain how recirculating shift registers work and name at least one function that they may be used for.
Explanation / Answer
1. The time it takes for a logic gate to respond to input change is propagation delay
2. Give one reason why CMOS and TTL gates cannot be simply connected
3. The number of different states that a counter cycles through before repeating is the MOD of the counter.
4. A transducer generally changes one energy form to another.
5. A LED is a device that can be used to check the logic level on a pin of a counter.
6. Which of the following is not performed by a counter?
c. serve as a seven-segment display,
7. If the CLR input of a shift-register has a bar over it (inverted), then it is active LOW
8. consider a 4-bit counter made with JK flip flops with preset and clear inputs. Describe the changes/attributes that need to make the counter reset after counting to 1001. Be sure to state any assumptions that are made.
make 6 stages after 1001 ( 1001 to 1111) as a dont care
9. Explain how recirculating shift registers work and name at least one function that they may be used for.
if feed back is like Q output of last flip flop is connect to J input of first flip flop and Q' output of last flip flop is connect to K input of first flip flop than it is a ring counter
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