CET Digital Logic & Microprocessors 2

Question 1

In a microprocessor-controlled euthanasia chamber, a sensor outputs a HIGH signal when CO2 concentration exceeds 70%.
Which logic gate produces a HIGH output only when BOTH the concentration sensor AND the door-closed sensor are HIGH?

Accepted Answer

AND gate

Answer

OR gate

Answer

NOT gate

Answer

XOR gate

Question 2

A euthanasia equipment controller uses an 8-bit binary counter to track cycle duration. What is the maximum decimal count value this counter can represent?

Accepted Answer

255

Answer

128

Answer

256

Answer

512

Question 3

Which number system uses only the digits 0 and 1 and is the native language of digital microprocessors in euthanasia equipment controllers?

Accepted Answer

Binary

Answer

Octal

Answer

Hexadecimal

Answer

Decimal

Question 4

A gas flow controller in a euthanasia system uses a truth table with inputs A (flow valve) and B (pressure OK). The output is HIGH only when A=1 and B=0, OR when A=0 and B=1. Which gate implements this logic?

Accepted Answer

XOR gate

Answer

NAND gate

Answer

NOR gate

Answer

XNOR gate

Question 5

In a microprocessor-based euthanasia system, the program counter (PC) register serves what primary function?

Accepted Answer

Holds the address of the next instruction to execute

Answer

Stores the current sensor reading

Answer

Counts the number of completed euthanasia cycles

Answer

Stores the result of the last arithmetic operation

Question 6

A euthanasia equipment display shows the hexadecimal value 0xFF. What is the decimal equivalent?

Accepted Answer

255

Answer

240

Answer

254

Answer

256

Question 7

Which type of memory in a euthanasia controller retains its stored program and calibration data even when power is removed?

Accepted Answer

ROM/Flash memory

Answer

RAM (Random Access Memory)

Answer

Cache memory

Answer

Register file