Computer fundamental MCQ Questions and answers- Technical Aptitude

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.

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

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.

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

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

Paging drum One form of swapping device used to hold the images of pages no longer held in main memory in a paging virtual management system.

A Critical Section is a code segment that accesses shared variables and has to be executed as an atomic action. It means that in a group of cooperating processes, at a given point of time, only one process must be executing its critical section.

A capacitive keyboard is a type of computer keyboard that uses a change of capacitance on the capacitor pad to detect a pressed key on a keyboard. It provides functionality similar to a standard contact keyboard, but its internal structure is different and is fairly quicker and more reliable.

A step-by-step procedure used to solve a problem is called Algorithm. An algorithm (pronounced AL-go-rith-um) is a procedure or formula for solving a problem, based on conducting a sequence of specified actions.

PROM memory is non-volatile and may be written only once. A programmable read-only memory (PROM) or field programmable read-only memory (FPROM) or one-time programmable non-volatile memory (OTP NVM) is a form of digital memory where the setting of each bit is locked by a fuse or antifuse.