| |
|
| |
| Interview Questions | |
|
Electronics Hardware Computer Software Intel screening questions QA Software Quick Thinking Tests General questions Phone screening questions Submit your Q or A | |
| Resources | |
| Technical articles Ask an Expert How to get a job in Silicon Valley Useful tips | |
| Break point | |
|
Written Exam Logic Tests Professional Test Tomato company Cup of coffee How stock market works Engineering jokes | |
| About Hitequest | |
|
About Hitequest Home page | |
|
|
|
| ||
| |||
|
Q:You have two counters to 16 built from negedge D- FF . The first circuit is a synchronous one and the second one is a "ripple" (cascading). Which circuit has less delay? 
1 - is ripple counter; 2 - synchronous. Both circuits consist of 4 FF, synchronous counter also has some logic to control it's operation. From diagram 3 (for ripple) and 4 (for synchronous) it is seen that the propagation delay of the ripple counter is 4* t_prop , while the synchronous counter has only 1* t_prop. |
| | |
