EXPLAIN KEYS AND TYPES OF KEYS IN DBMS

DIFFERENCE BETWEEN SYNCHRONOUS AND ASYNCHRONOUS COUNTERS:
  2. SYNCHRONOUS COUNTERS :-

• Synchronous counter is faster than the asynchronous counters.
• Synchronous counter cheaper than the asynchronous counters.
• Synchronous counter is also known as parallel counter.
• Synchronous counter does not produce any decoder error.
• For example : ring counter and johnson counter.

  2. ASYNCHRONOUS COUNTERS :-

• Asynchronous counter is slower than the asynchronous counters.
• Asynchronous counter costly than the synchronous counters.
• Asynchronous counter is also known as serial counter.
• Asynchronous counter  produces decoder error.
• For example : ripple up counter and ripple down counter.