Computer Fundamental Miscellaneous - Study Mode
[#631] What type of magnetic material is normally used in bubble memories?
Correct Answer
(C) Garnet
Explanation
Solution: Garnets are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. All species of garnets possess similar physical properties and crystal forms, but differ in chemical composition.
[#632] A byte is comprised of:
Correct Answer
(C) Eight bits
Explanation
Solution: The basic unit of information in computer storage and processing. A byte consists of 8 adjacent binary digits (bits), each of which consists of a 0 or 1. (Originally, a byte was any string of more than one bit that made up a simple piece of information like a single character.)
[#633] Which of the following printer can be classified as a page-at-a-time printer?
Correct Answer
(A) Laser printer
Explanation
Solution: Laser printer : Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image.
[#634] The CPU of a computer transfers print output to a temporary disk memory at high speed and then gets back to processing another job without waiting for the output to got to the printer. In this way, the CPU does not remain idle due to its own high speed as compared to the low speed of the printer. What is the name of this memory?
Correct Answer
(D) Buffer memory
Explanation
Solution: A buffer, also called buffer memory, is a portion of a computer's memory that is set aside as a temporary holding place for data that is being sent to or received from an external device, such as a hard disk drive (HDD), keyboard or printer. Source : linfo.org
[#635] Which of the following registers hold the information before it goes to the decoder
Correct Answer
(B) data register
Explanation
Solution: Data registers hold the information before it goes to the decoder. A memory buffer register (MBR) or memory data register (MDR) is the register in a computer's CPU that stores the data being transferred to and from the immediate access storage. It contains a copy of the value in the memory location specified by the memory address register. It acts as a buffer, allowing the processor and memory units to act independently without being affected by minor differences in operation. A data item will be copied to the MBR ready for use at the next clock cycle, when it can be either used by the processor for reading or writing, or stored in main memory after being written.