When is it important to use a three-state buffer?(a) When two or more outputs are connected to the same input(b) When all outputs are normally HIGH(c) When all outputs are normally LOW(d) When two or more outputs are connected to two or more inputsThis question was addressed to me during an interview for a job.My query is from Shift Register Counters in division Registers of Digital Circuits

When is it important to use a three-state buffer?(a) When two or more

1.	When is it important to use a three-state buffer?(a) When two or more outputs are connected to the same input(b) When all outputs are normally HIGH(c) When all outputs are normally LOW(d) When two or more outputs are connected to two or more inputsThis question was addressed to me during an interview for a job.My query is from Shift Register Counters in division Registers of Digital Circuits
Answer» Right answer is (a) When TWO or more outputs are connected to the same INPUT For explanation: When two or more outputs are connected to the same input, in such situation we use of tristate buffer always because it has the capability to TAKE upto THREE inputs. A buffer is a CIRCUIT where the output follows the input.

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