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Questions and Answers
The purpose of storing information in binary arrangement is to make it difficult to retrieve when needed.
The purpose of storing information in binary arrangement is to make it difficult to retrieve when needed.
False (B)
In the context of a file organizer analogy, each record being first put in an envelope and tagged represents how data is organized in a computer's memory.
In the context of a file organizer analogy, each record being first put in an envelope and tagged represents how data is organized in a computer's memory.
True (A)
RAM is considered as the permanent storage where information is replicated from.
RAM is considered as the permanent storage where information is replicated from.
False (B)
The Decimal Number System comprises of 8 unit digits.
The Decimal Number System comprises of 8 unit digits.
Binary is an example of a base-8 number system.
Binary is an example of a base-8 number system.
In the decimal number system, the digit '9' represents the highest value.
In the decimal number system, the digit '9' represents the highest value.
Octal number system uses digits from 0 to 7.
Octal number system uses digits from 0 to 7.
Binary representation of (1011) is equivalent to the decimal value 13.
Binary representation of (1011) is equivalent to the decimal value 13.
What is the decimal value of the binary number (101101)?
What is the decimal value of the binary number (101101)?
When converting the binary number (110011)₂ to decimal, what is the value obtained?
When converting the binary number (110011)₂ to decimal, what is the value obtained?
If a binary number has a value of (111111), what is its equivalent in decimal?
If a binary number has a value of (111111), what is its equivalent in decimal?
What is the binary representation of the decimal number 25?
What is the binary representation of the decimal number 25?
If a decimal number is represented as (1010)₂ in binary, what is its value?
If a decimal number is represented as (1010)₂ in binary, what is its value?
Given the binary number (10000)₂, what is its decimal equivalent?
Given the binary number (10000)₂, what is its decimal equivalent?
What is the binary representation of the decimal number 42?
What is the binary representation of the decimal number 42?
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Study Notes
Information Representation in Computers
- Information is stored in computers in the form of binary digits, which are represented as '0's and '1's.
- The process of storing information is similar to a file organizer, where records are kept in envelopes, tagged, and organized in a particular order before being stored in drawers.
Number System
- A number system is a way of representing information.
- There are different types of number systems, including decimal, binary, and octal.
Decimal Number System
- The decimal number system is based on 10 unit digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
- The decimal number system is used in everyday economics and business, especially in the form of currency.
- Examples of decimal numbers include 29, 234, and 101.
Binary Number System
- Computers understand instructions in the form of binary numbers only.
- Binary numbers are represented using two digits: 0 and 1.
Number System Conversion
- Binary numbers can be converted to decimal numbers and vice versa.
Conversion of Binary Number to Decimal Number
- To convert a binary number to a decimal number, put the respective power of 2 on the binary digits from right to left, starting from 0.
- Examples of binary to decimal number conversion include:
- (1001)₂ = 1x2³+0x2²+0x2¹+1x2° = (9) 10
- (111001)₂ = 1x25+1x2⁴+1x2³ +0x2²+0x2¹+1x2 = (57) 10
Conversion of Decimal Number to Binary Number
- To convert a decimal number to a binary number, divide the number by 2, noting down the quotient and remainder, and repeat the process until the quotient is no longer divisible by 2.
- Examples of decimal to binary number conversion include:
- (17) 10 = (10001) 2
- (57) 10 = (111001) 2
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