L&T Emsys Interview Question Bank continued from Part 1…
Q : Which is the basic gate used for TTL logic?
A : The basic gate used for TTL logic is NAND gate.
Q : What is pipelining?
A : Pipelining is the process of en-queuing the next process to be executed while the current process is still under execution.
Q : Name a specification that is not for digital I.C.
A : Bandwidth.
Q : What is transponder?
A : Transponder refers to TRANS-resPONDER which is a device that receives, amplifies, and then retransmits the (reply) signal to a different frequency upon proper verification of the received signal.
Q : Which logic family has the lowest propagation delay?
A : ECL (Emitter Coupled Logic) has the lowest propagation delay.
Q : What type of communication is used in USART?
A : USART (Universal Synchronous/Asynchronous Receiver/Transmitter) uses half duplex mode of communication.
Q : What are active and passive components? Give examples of both.
A : Active components are components that produce energy (in the form of voltage or current) such as transistors, while passive components consume energy like resistor, capacitor etc.
Q : What is the result of 1000>>2?
A : 1000>>2 (i.e. right shifting 1000, 2 times) is 0010.
Q : What is scratch pad?
A : It is a high speed internal memory for temporary storage.
(Continued to Part 3…)
Gautam Vashisht