Section 01: Number Systems and Bases

Question 1

What is the study of computing?

Answer 1

📎 Study of computers and computing, including (1) theoretical and algorithmic foundations, (2) hardware and software, and uses (3) process information

• Study algorithm
• Data structures
• Computer system and networks
• Artificial intelligence

Question 2

What are the parts of a computer?

Answer 2

1. Input: Keyboard, mouse, camera
2. (a) Central Processing Unit (CPU) and (b) Memory
3. Output: screan, headphones, printer

Question 3

What are binary numbers in computers?

How does this relate to bits and bytes?

Answer 3

• Computer: set 0s and 1s ⇒ computers’ processor is a set of transistors

Binary Numbers in Computers:

Bits: represents most basic unit of info computer

Bytes: Combination of 8 bits

Positive and Negative Integers

Using Extra digit indicate positive and negative numbers:

• 109 = 01101101 and -109 = 11101101

Text in Binary:

• Every character also represented as binary numbers using ASCII Character encoding - standard used in computers

Binary used encode all info ⇒ How to know how (in what format) interpret a number?

Question 4

How to convert from Binary to Decimal:

Answer 4

Question 5

Convert any binary number to decimal:

Answer 5