Introduction to Computing

Practice questions and answers covering the history, generations, and types of computing systems based on the lecture notes.

What is the definition of computing?

Computing is the process of using computers to store, process, retrieve, and share information, involving computer technology to solve problems, perform tasks, and communicate efficiently.

List three benefits of computing mentioned in the lecture.

Saves time, improves accuracy, and increases productivity.

What was the earliest counting tool used by humans?

Fingers were the earliest counting tool used because they were always available.

How were tally marks used to represent numbers?

People drew vertical lines ($|$, $||$, $|||$, $||||$) on wood, bones, or walls, where the fifth line crossed the first four ($||||/$).

What is an Abacus and when was it used?

A wooden frame with rods and movable beads used for mathematical calculations around $2500$ BC.

What is a Quipu (Knotted Cords)?

A complex recording and accounting device used by the Inca and ancient Andean civilizations consisting of colored ropes with knots to record numbers.

When was Napier's Bones invented and who was the inventor?

It was invented by John Napier in $1617$.

What tool did William Oughtred invent in $1622$ and how long was it used?

The Slide Rule, an analog calculating tool that engineers and scientists relied on for over $300$ years.

What was the capability of the Pascaline ($1642$)?

It was a gear-and-wheel mechanical calculator designed for addition and subtraction.

How was the Stepped Reckoner ($1673$) more advanced than the Pascaline?

It was a digital mechanical calculator capable of performing addition, subtraction, multiplication, and division.

What revolutionary concept did Joseph Marie Jacquard introduce in $1804$?

The Jacquard Loom introduced the fundamental concept of programming machines using stored instructions via punched cards.

What is Charles Babbage's legacy in computing?

He is known as the "Father of the Computer" for designing the Difference Engine ($1822$) and the Analytical Engine ($1837$).

Which components were included in the design of the Analytical Engine ($1837$)?

Memory, a processor, input, and output.

What technology was used in the First Generation of computers ($1940$-$1956$)?

Vacuum tubes for circuitry.

What were the characteristics of the ENIAC and UNIVAC I?

They were massive, highly expensive, power-hungry, prone to intense heat, and used primitive machine language.

What replaced vacuum tubes in the Second Generation ($1956$-$1963$)?

Transistors.

What defines the Third Generation of computers ($1964$-$1971$)?

The use of Integrated Circuits ($IC$), expanded memory, smaller size, and the popularization of operating systems.

Which microprocessor powered the Fourth Generation ($1971$-$Present$)?

Intel $4004$.

How do modern digital computers process data?

They process data digitally using binary numbers ($0$s and $1$s).

What is the purpose of a server?

A powerful, non-stop computer kept in data centers to host websites, store massive cloud databases, and deliver files to thousands of users simultaneously.

Define an embedded computer.

A tiny, highly specialized computer permanently built inside a larger machine to run a single specific task.

Who was Ada Lovelace?

A British mathematician ($1815$-$1852$) known as the World's First Computer Programmer who wrote the first computer algorithm for the Analytical Engine.

What is the difference between a Mainframe Computer and a Microcomputer?

A Mainframe is a high-capacity computer for processing massive daily transactions, while a Microcomputer (Personal Computer) is powered by a single microprocessor and designed for one person at a time.

What is a Supercomputer?

The fastest and most powerful class of computer in existence, used to solve incredibly complex, massive-scale problems.