1000+ Computer Architecture Interview Questions & Answers Pdf - 2

Question: 6

What is instruction decoder?

When a program is executed, instructions flow from the main memory to the CPU through the bus. The instructions are then decoded by a processing unit called the instruction decoder that interprets and implements the instructions.

Question: 7

When do we use ROM?

The information is burnt into the ROM chips at manufacturing time.

Once data has been written into a ROM chip, it cannot be erased but we can read it.

When we switch off the computer, the contents of the ROM are not erased but remain stored permanently.

ROM is a non volatile memory. ROM stores critical programs such as the programs that boots the computer.

Question: 8

What is a thermal printer?

Thermal printers are printers that produce images by pushing electrically heated pins against special heat sensitive paper. They are inexpensive and used widely in fax machines and calculators. Thermal printer paper tends to darken over time due to exposure to sunlight and heat. So the printed matters on the paper fade after a week or two. It also produces a poor quality print.

Question: 9

Write a note on Ink-Jet Printer?

Inkjet printer use colour cartridges which combine magenta, yellow and cyan inks to create colour tones. A black cartridge is also used for crisp monochrome output. Inkjet printers work by spraying ionizing ink at a sheet of paper.
Magnetized plates in the ink’s path direct the ink onto the paper in the described shape.

Question: 10

What is Arithmetic Logic Unit (ALU)?

The arithmetic and logic unit (ALU) is the part of CPU where actual computations take place. It consists of circuits which perform arithmetic operations over data received from memory and are capable of comparing two numbers.