Computer fundamental MCQ Questions and answers- Technical Aptitude

Computer Output Microfilm (COM) is a system that converts stored data directly to microfilm or microfiche.

A microprocessor is a computer processor that incorporates the functions of a central processing unit on a single integrated circuit (IC), or at most a few integrated circuits. The microprocessor is a multipurpose, clock driven, register based, digital integrated circuit that accepts binary data as input, processes it according to instructions stored in its memory, and provides results as output. Microprocessors contain both combinational logic and sequential digital logic. Microprocessors operate on numbers and symbols represented in the binary number system.

Source : wikipedia.org

The plotter is a computer printer for printing vector graphics. In the past, plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. A plotter gives a hard copy of the output. It draws pictures on a paper using a pen. Plotters are used to print designs of ships and machines, plans for buildings and so on.

In computing, an instruction register (IR) is the part of a CPU's control unit that holds the instruction currently being executed or decoded.

Storage on PC allows you to store files until something erases it, but memory loses its contents whenever its power is lost. The non-volatile memory saves the data when the power is off.

We can count the number of zeros and ones to see how many bits are used to represent 255 in binary i.e. 11111111. Therefore, we have used 8 bits to represent 255 in binary.
1 byte = 8 bits, 2⁸ = 256 ranging from 0 - 255.

The width and clock rate of the data bus determine the number of bytes per second that it can carry, which is one of the main factors determining the processing power of a computer. Most current processor designs use a 32-bit bus, meaning that 32 bits of data can be transferred at once. A data bus can transfer a data to and from the main memory of a computer, or into or out of the CPU that acts as the device's "engine".

Major-minor loop architecture offers a dramatic improvement in access time. During a write operation data are introduced into the major loop by pulses of current through the hairpin loop of the generator.
1. Major loop
2. Minor loop

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions. The computer industry has used the term "central processing unit" at least since the early 1960s. Traditionally, the term "CPU" refers to a processor, more specifically to its processing unit and control unit (CU), distinguishing these core elements of a computer from external components such as main memory and I/O circuitry.

Source : wikipedia.org

Magnetic material is normally used in bubble memories has been developed based on magnetic garnet ferrites. In bubble memory small, cylindrically reversed magnetic domains can be generated, moved, and stored in specified locations to be read at a later time.