Computer Fundamentals

Question 1

it deals with variables of two discrete values and with operations that assume logical meaning. It is equivalent to Boolean Algebra. It also consists of binary variables and logical operations

Answer 1

Boolean Logic

Question 2

A table of all possible combinations of the variables showing the relation between the values that the variables may take and the result of the operations

Answer 2

Truth table

Question 3

NAND and NOR are examples of

Answer 3

Derived logic

Question 4

Blocks of hardware that produce a logic of 1 or 0 if input logic requirements are satisfied.

Answer 4

Logic Gates

Question 5

It is an expression formed with binary variables, the operators, parentheses and equal sign

Answer 5

Boolean Functions

Question 6

It is a logic system without memory or storage capacity

Answer 6

Combinational

Question 7

It is a logic system WITH memory or storage capacity

Answer 7

Sequential

Question 8

It is a logic system that uses simple logic gates and only carries out the implementation.

Answer 8

Combinational

Question 9

It is a logic system that carries out the implementation together with the logic gates, flip-flops, counters, registers, memory cores etc.

Answer 9

Sequential

Question 10

It is a logic system that is described by a set of output functions only.

Answer 10

Combinational

Question 11

It is a logic system that is described by a set of output functions and also next state functions.

Answer 11

Sequential

Question 12

It is a logic system where its output depends only on the present input.

Answer 12

Combinational

Question 13

It is a logic system whose output depends on the present input as well as on the present state of the system.

Answer 13

Sequential

Question 14

It is a logic system whose output depends on the present input as well as on the present state of the system.

Answer 14

Sequential

Question 15

Resistor-Transistor Logic is a ____ gate.

Answer 15

NOR

Question 16

Diode Transistor Logic behaves like a ______ gate

Answer 16

NAND

Question 17

Emitter Coupled Logic behaves like a _____ gate

Answer 17

NOR

Question 18

This code is very convenient for representing decimal digits in digital circuits

Answer 18

BCD Code

Question 19

This code is very convenient for representing decimal digits in digital circuits

Answer 19

BCD Code

Question 20

These are don’t care conditions and do not have any meaning in BCD Code

Answer 20

1010 and 1111

Question 21

This code can be conveniently used for performing subtracting operations in digital computers

Answer 21

Excess 3- Code

Question 22

This code can be derived from BCD by adding 3 to each coded number.

Answer 22

Excess-3 Code

Question 23

In this code only one bit changes between any two successive numbers.

Answer 23

Gray code

Question 24

It is mainly used in the location of angular positions of a rotating shaft

Answer 24

Gray code

Question 25

This code uses 3 bits to represent one octal digit.

Answer 25

Octal code

Question 26

This code uses four bits to represent one hexadecimal digit.

Answer 26

Hexadecimal Code

Question 27

This code uses four bits to represent one hexadecimal digit.

Answer 27

Hexadecimal Code

Question 28

It is a type of computer storage containing non-volatile, permanent data that, normally, can only be read, not written to. Once data is written on this chip, it cannot be removed

Answer 28

Read Only Memory (ROM)

Question 29

it contains the programming that allows a computer to start up or regenerate each time it is turned on

Answer 29

Read Only Memory (ROM)

Question 30

It is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.

Answer 30

Random Access Memory (RAM)

Question 31

This memory storage is volatile. That means data is retained in it as long as the computer is on, but it is lost when the computer is turned off.

Answer 31

Random Access Memory (RAM)

Question 32

This refers to the rate at which the microprocessor can write to the chip. It is usually measured in nanoseconds.

Answer 32

Chip Speed

Question 33

It is a programming language in which the instructions are in a form which allows the computer to perform them immediately without the need to translate.

Answer 33

Machine Language

Question 34

A programming language that is machine oriented and in which each instruction corresponds or resembles a machine instruction. It must be translated to machine language first though.

Answer 34

Low-Level language

Question 35

This programming language has an extensive vocabulary of word, symbols and sentences.

Answer 35

High level language

Question 36

It is the most well known commercial programming language.

Answer 36

COBOL (Commercial Business Oriented Language)

Question 37

These are used to multiply a variable quantity by a constant

Answer 37

Attenuators

Question 38

These are used to add or subtract variables as required

Answer 38

Summing amplifiers

Question 39

These are used to multiply two variables

Answer 39

Servo multipliers

Question 40

These are used to simulate the arbitrary behavior of variables

Answer 40

Function generators

Question 41

These are used to integrate a variable with respect to time.

Answer 41

Integrating amplifiers

Question 42

It is a semiconductor device consisting of electronic logic circuits manufactured using either a large-scale (LSI) or very-large scale integration (VLSI) technique. It is capable of performing computing functions and making decisions to change the sequence of program execution.

Answer 42

Microprocessor

Question 43

In this area of the microprocessor, computing functions are performed on the data.

Answer 43

Arithmetic/Logic Unit

Question 44

This area of the microprocessor is used primarily to store data temporarily during the execution of a program.

Answer 44

Register Unit

Question 45

This part of the microprocessor provides the necessary timing and control signals to all the operations in the microprocessor. It controls the flow of data between the microprocessor and peripherals including memory.

Answer 45

Control Unit

Question 46

It is an arithmetic language by which numerical procedures may be presented to t he computer in a blended form

Answer 46

Algorithmic language

Question 47

An eight level (7 bits + 1 parity bit) code from American Standard Codd for Information Interchange

Answer 47

ASCII

Question 48

A pattern of printed lines in binary coding that can be read into the computer by light pen scanning

Answer 48

Bar Code

Question 49

A programming language that is easy to learn and widely used as first programming language taught in schools and as the principal language in many minicomputers and microcomputers.

Answer 49

BASIC ( Beginner's All Purpose Symbolic Instruction Code)

Question 50

When power supply to a computer using main memory as semiconductor memory fails, all its memory is washed off. In order to restart, i.e. enable to work, it has to be programmed to accept instructions. What is this process called?

Answer 50

Bootstrap

Question 51

It is a memory device where an external field is applied to a ferromagnetic specimen, the domains in which magnetizations are antiparallel get converted into cylindrical domains known as bubble.

Answer 51

Bubble Memory

Question 52

A group of consecutive bits forming a unit storage in the computer and used to represent one alphanumeric character.

Answer 52

Byte

Question 53

An integrated circuit family, having high threshold logic and a technology which consumes very low power compared to other semiconductor technologies. It has moderate speed and high integrated device density.

Answer 53

CMOS (Complementary Metal Oxide Semiconductor)

Question 54

A program that translates a source program written in high level language into its equivalent machine language. The output program from this is called OBJECT PROGRAM.

Answer 54

Compiler

Question 55

A collection of logically related data elements that may be structured in various ways to meet the multiple processing and retrieval needs of individuals/organizations

Answer 55

Data Base

Question 56

It is any operating system which runs from the Hard Disk Drive.

Answer 56

DOS (Disk Operating System)

Question 57

An auxiliary memory storage device consisting of magnetic film coated on thin flat plastic substrate.

Answer 57

Floppy disk

Question 58

A scientific programming language used to perform mathematical computation.

Answer 58

FORTRAN (Formula Translation)

Question 59

A graphical display of the fundamental products in a truth table

Answer 59

Karnaugh Map

Question 60

The simplest type of flip-flop, consisting of two cross coupled NAND or NOR latches.

Answer 60

Latch

Question 61

What is the meaning of MOSFET

Answer 61

Metal Oxide Semiconductor Field Effect Transistor

Question 62

In a digital signal, the number of levels is _____

Answer 62

two

Question 63

In binary numbers, shifting the binary point one place to the right _______

Answer 63

multiplies by two

Question 64

15, 110, 19, 101 Which of these is not an octal number.

Answer 64

19

Question 65

The flip-flop circuit is a ________ circuit

Answer 65

bistable

Question 66

For LCD display what liquid crystal is used?

Answer 66

Nemanic Fluid

Question 67

A digital voltmeter has ______ input and ______ output.

Answer 67

analog, digital

Question 68

What display consumes the least amount of power.

Answer 68

LCD

Question 69

In a digital counter the number of flip-flops is _______ the number of bits required in the final binary count.

Answer 69

equal

Question 70

A D flip-flop is a _______ flip-flop

Answer 70

delayed

Question 71

A ______ flip-flop is used as a latch

Answer 71

RS

Question 72

When a binary adder is used as BCD adder, the sum is correct when it is ________

Answer 72

less than 9

Question 73

A byte stands for a string of ______ bits

Answer 73

8

Question 74

A simple flip-flop is a ____ bit storage cell

Answer 74

one