Computer Fundamental Miscellaneous - Study Mode

[#821] An input/output device at which data enters or leaves a computer system is
Correct Answer

(B) Terminal

Explanation

Solution: The correct answer is B: Terminal . Let's break down why: * What is an Input/Output (I/O) Device? I/O devices are how we, as users, interact with a computer. They allow us to give the computer instructions (input) and for the computer to show us results (output). * Option A: Keyboard A keyboard is primarily an input device. We use it to type data *into* the computer. It doesn't generally *display* information *from* the computer. * Option B: Terminal A terminal is a device that combines both input and output capabilities. It typically includes a display screen (output) and a keyboard (input), allowing for two-way communication with the computer system. It acts as an interface to access the computer. * Option C: Printer A printer is primarily an output device. It takes data *from* the computer and prints it on paper. It doesn't usually allow us to give instructions *to* the computer. * Option D: Plotter A plotter is another type of output device, similar to a printer, but typically used for larger-format graphics. It also doesn't generally receive instructions from a user. * Option E: None of the above Since a terminal *is* an I/O device, this option is incorrect. In summary : A terminal allows data to both *enter* (input - via keyboard) and *leave* (output - via the screen) the computer system, making it the most fitting answer.

[#822] The fastest type of memory from the following list is
Correct Answer

(B) semiconductor memory

Explanation

Solution: Semiconductor memory is a digital electronic data storage device, often used as computer memory, implemented with semiconductor electronic devices on an integrated circuit (IC).

[#823] Which of the following is a secondary memory device?
Correct Answer

(B) Disk

Explanation

Solution: Secondary memory is where programs and data are kept on a long-term basis. Common secondary storage devices are the hard disk and floppy disks. The hard disk has enormous storage capacity compared to main memory.

[#824] The register which keeps track of the execution of a program and which contains the memory address of the instruction currently being executed is known as
Correct Answer

(C) Program counter

Explanation

Solution: Program counter : A program counter is a register in a computer processor that contains the address (location) of the instruction being executed at the current time. As each instruction gets fetched, the program counter increases its stored value by 1. After each instruction is fetched, the program counter points to the next instruction in the sequence. When the computer restarts or is reset, the program counter normally reverts to 0. Source : techtarget.com

[#825] The input and output devices are located away from the central computer facility in which particular type of processing.
Correct Answer

(B) Batch processing

Explanation

Solution: Batch processing requires separate programs for input, process and output. An example is payroll and billing systems.