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Question 1

What is a computer?

Answer 1

An electronic device that can process and store information.

Question 2

What are the basic components of a computer?

Answer 2

• Central Processing Unit (CPU)
• Memory (RAM)
• Storage (hard drive or solid-state drive)
• Input devices (keyboard, mouse, etc.)
• Output devices (monitor, printer, etc.)
• Peripheral devices (e.g., USB drives)

Question 3

What is the function of the CPU?

Answer 3

It performs most of the processing and calculations required for a computer to function.

Question 4

What does RAM stand for and its role?

Answer 4

Random Access Memory; it temporarily stores data and instructions while the computer is running.

Question 5

What is the purpose of storage in a computer?

Answer 5

It is the long-term memory where data is stored even when the computer is turned off.

Question 6

What are input devices?

Answer 6

Devices that allow users to input data or commands into the computer.

Question 7

What are output devices?

Answer 7

Devices that display the results of the computer’s processing.

Question 8

What are peripheral devices?

Answer 8

Additional components that can be added to a computer to enhance its functionality.

Question 9

True or False: Computers can understand human languages directly.

Answer 9

False

Question 10

What binary states do computers use?

Answer 10

• 0
• 1
• True
• False
• On
• Off

Question 11

What is a transistor?

Answer 11

A tiny device used to store 2 values: 1 (on) and 0 (off).

Question 12

How many bits are in a byte?

Answer 12

8 bits

Question 13

What does ASCII stand for?

Answer 13

American Standard Code for Information Interchange.

Question 14

What is the range of the original ASCII coding system?

Answer 14

0 to 127

Question 15

How many possible values can an 8-bit byte represent?

Answer 15

256 possible values (from 0 to 255)

Question 16

What is the ASCII code for the uppercase letter ‘A’?

Answer 16

65

Question 17

What are accented characters?

Answer 17

Letters modified with an accent mark, changing pronunciation or meaning.

Question 18

True or False: Unicode uses 1 byte for each character.

Answer 18

False

Question 19

What is the maximum number of symbols that Unicode can represent?

Answer 19

65,536 different symbols

Question 20

What is a bit?

Answer 20

The smallest unit of information on a machine, holding a value of 0 or 1.

Question 21

What defines a word in a computer system?

Answer 21

The number of bits manipulated as a unit by the CPU.

Question 22

What is the relationship between word size and memory addressing?

Answer 22

• Word size determines the number of bits the CPU can process at once
• Larger word sizes imply larger addressable memory space.

Question 23

How many unique memory addresses can a 32-bit system address?

Answer 23

Approximately 4 gigabytes (GB) of addressable memory.

Question 24

What is the maximum addressable memory for a 64-bit system?

Answer 24

Theoretical maximum of 16 exabytes.

Question 25

What is the ASCII code for a blank space?

Answer 25

32 (decimal) or 0010 0000 (binary)

Question 26

What is the ASCII code for a blank space?

Answer 26

The ASCII code for a blank space is the decimal number 32, or the binary number 0010 0000. ## Footnote This code is essential for distinguishing between words and characters in text.

Question 27

How many bits are required to represent each character in ASCII?

Answer 27

8 bits are required to represent each character in ASCII. ## Footnote This includes letters, blank spaces, and punctuation marks.

Question 28

What are the three categories of data typically processed in a computer system?

Answer 28

* Text * Numbers * Sound / Voice * Video / Moving Pictures ## Footnote All data forms are stored, processed, and transmitted in a similar manner.

Question 29

How is an integer represented in a computer system?

Answer 29

An integer is converted from decimal (base 10) to binary (base 2). ## Footnote This conversion allows the integer to be stored as a byte.

Question 30

What is the bit pattern for the character 'A' in ASCII?

Answer 30

The bit pattern for 'A' is 01000001. ## Footnote This corresponds to the decimal value 65.

Question 31

How many bytes does the word 'CAB' take up in computer memory?

Answer 31

The word 'CAB' takes up 3 bytes in memory: * 01000011 for 'C' * 01000001 for 'A' * 01000010 for 'B' ## Footnote Each character is represented by one byte.

Question 32

What is the relationship between bits, bytes, and characters?

Answer 32

8 Bits = 1 Byte = 1 Character. ## Footnote This relationship is fundamental to data representation in computers.

Question 33

What is 1 Kilobyte (KB) in bytes?

Answer 33

1 Kilobyte (KB) is 1024 bytes. ## Footnote Kilo represents 2 to the tenth power.

Question 34

What is the value of 1 Megabyte (MB) in bytes?

Answer 34

1 Megabyte (MB) is 1,048,576 bytes (1024 x 1024). ## Footnote It is roughly equivalent to one million bytes.

Question 35

How many Gigabytes (GB) are in 1 Terabyte (TB)?

Answer 35

1 Terabyte (TB) is equal to 1024 Gigabytes (GB). ## Footnote This hierarchical structure continues with larger units of data.

Question 36

True or False: A Terabyte is smaller than a Gigabyte.

Answer 36

False. ## Footnote A Terabyte is significantly larger than a Gigabyte.

Question 37

What is the maximum number of bits that can be stored in a 2KB memory device?

Answer 37

The maximum number of bits in a 2KB device is 16,384 bits (2KB x 8 bits). ## Footnote This is calculated by multiplying the number of bytes by 8.

Question 38

If a music file takes up 4MB of space, how many can be stored on a 6GB phone?

Answer 38

The maximum number of music files is 1,500 (6GB / 4MB). ## Footnote This is derived from converting GB to MB and dividing.

Question 39

How much data in KB is left on a 16GB Flash Disk that is 95% full after deleting 8,000MB?

Answer 39

The remaining data is 7,680,000 KB. ## Footnote This includes calculations of initial full capacity in KB minus the deleted amount in KB.

Question 40

What is the minimum storage space needed for 2500 documents (50KB each), 5 movies (2GB each), and 1500 photos (3MB each) in KB?

Answer 40

The minimum storage space needed is 12,000,000 KB. ## Footnote This calculation involves converting all file sizes to KB before summing.