CET Digital Logic & Microprocessors 3

Question 1

A euthanasia system microcontroller must read a temperature sensor every 500 milliseconds. Which microprocessor feature is best suited to trigger this periodic reading without continuously consuming CPU cycles?

Accepted Answer

Hardware timer/interrupt

Answer

Hardware timers generate periodic interrupts that signal the CPU at precise intervals, freeing the processor from constant polling loops.

Question 2

In Boolean algebra used for designing euthanasia equipment safety logic, which law states that A + (B × C) = (A + B) × (A + C)?

Accepted Answer

Distributive Law

Answer

The Distributive Law in Boolean algebra allows OR to distribute over AND and vice versa, useful for simplifying complex safety logic circuits.

Question 3

A CO2 euthanasia controller uses a 4-bit DAC (Digital-to-Analog Converter) to control gas flow rate. How many distinct flow rate levels can this DAC produce?

Accepted Answer

16

Answer

A 4-bit DAC produces 2^4 = 16 distinct analog output levels, from 0 to full scale.

Question 4

Which microprocessor bus carries data between the CPU, memory, and peripherals in a euthanasia equipment controller?

Accepted Answer

Data bus

Answer

The data bus is a bidirectional pathway that transfers actual data values between the CPU, memory, and I/O peripherals.

Question 5

De Morgan's first theorem states that NOT(A AND B) equals what expression?

Accepted Answer

NOT(A) OR NOT(B)

Answer

De Morgan's first theorem: the complement of a product (NAND) equals the sum of the complements — NOT(A AND B) = NOT(A) OR NOT(B).

(CET) Certified Euthanasia Technician Practice Test

(CET) Certified Euthanasia Technician Practice Test

CET Digital Logic & Microprocessors 3