21) In logic algebra, variables can assume only two values: either……….or 1. (a)

Question

21) In logic algebra, variables can assume only two values: either……….or 1.

(a) 2 (b) 0 (c) 3 (d) 4

22) A logic gate is an electronic circuit which

(a) makes logic decisions (b) allows electron flow only in one direction

(c) works on binary algebra (d) alternates between 0&1 values

23) In positive logic, logic gate 1 corresponds to

(a) positive voltage (b) higher voltage level

(c) zero voltage level (d) lower voltage level

24) The output of a 2-input OR the gate is 0 only when it’s

(a) both inputs are 0 (b) either input is 1

(c) both inputs are 1 (d) either input is 0

25) When an input electrical signal A=10100 is applied to a NOT gate, it’s output

Signal is

(a) 01011 (b) 10101 (c) 10100 (d)00101

26) A NOR gate is ON only when all it’s inputs are

(a) ON (b) positive (c) high (d) OFF

27) A Register is a group of ---------

a) OR gates b)OR & AND gate c)Flip-flops d)None of these

28) Each Flip-flop stores ---------- bits

a) 1 bit B) 8 bit c) 16 bit d)2 bit

29)__________is used to create Large program on internet

a) C++ b) HTML c) C language d) Java script

30)The Device which converts instructions into the binary form that is understood by the

computer and supply to the computer is known as__________

a) Input b) Output c) Automatic d) Memory

31)Laptop PCs are also known as __________Computers

a) Mainframe b) Super c) Notebook d) personal

32)Windows 7 is __________

a) Graphics System b) Operating System c) Drawing system d) Processing

system

33)The number system that we use in our day to day life is called the Number

System__________

a) Octal b) Binary c) hexadecimal d) Decimal

34. Why registers are used?

35. Why memory is used?

36. What is MBR?

37. Define Access time of memory?

38. What are the basic 3 part of the computer?

39. What is memory cell?

40. What is the purpose of ALU unit in CPU ?

Explanation / Answer

Ans 21 ) b

In logic algebra, variables can assume only two values: either 0 or 1.

Ans 22) a

A logic gate is an electronic circuit which makes logic decisions

Ans 23) b

In positive logic, logic gate 1 corresponds to higher voltage level

Ans 24) a

The output of a 2-input OR the gate is 0 only when it’s both inputs are 0

Ans 25) a

When an input electrical signal A=10100 is applied to a NOT gate, it’s output

Signal is 01011

Ans 26) d

A NOR gate is ON only when all it’s inputs are OFF

Ans 27 ) c

A Register is a group of Flip-Flops

Ans 28) a

Each Flip-flop stores 1 bits

Ans 29) d

javascript is used to create Large program on internet

Ans 30 ) a

The Device which converts instructions into the binary form that is understood by the

computer and supply to the computer is known as Input

Ans 31 ) c

Laptop PCs are also known as Notebook Computers.

Ans 32) b

Windows 7 is Operating System

Ans 33) d

The number system that we use in our day to day life is called the Number System Decimal

Ans 34) Why registers are used?

Registers are used to quickly accept , store , transfer data and instructions that are being used immediately by the Central Processing Unit

Ans 35). Why memory is used?

Memory refers to Computer Hardware devices used to store information for immediate use in computer.

For Example : RAM (Random Access Memory)

Ans 36) What is MBR?

MBR = Master Boot Record (MBR) is the information in the first sector of any hard disk or diskette that identifies how and where an operating system is located so that it can be boot (loaded) into the computers main storage or random access memory

Ans 37) Define Access time of memory?

Access time of memory is how long it takes a character in memory to be transfered to or from the CPU .

In a PC or Mac, fast RAM chips have an access time of 70 nanoseconds.

Ans 38) What are the basic 3 part of the computer?

All computer system have three parts input , process and Output.

Input -> Processing -> Output

Computers also need to store program instructions and data

Ans 39) What is memory cell?

The Memory Cell is the Fundamental bulding block of Computer Memory.

Memory cell is an electronic circuit that stores one bit of binary information and it must be set to store a logic 1 and reset to store a logic 0

Ans 40). What is the purpose of ALU unit in CPU ?

ALU (Airthmetic Logic unit) is a degital circuit used to perform arithmetic and logic operations. It represents the fundamental bulding block of the central processing unit (CPU) of a computer

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.