ArulmiguMeenakshi Amman College of Engineering
Vadamavandal-604410.
Important Question and Answers
CS25C03 - Essential of Computing
Prepared by
V.Umapathy,
Prof. /Mech.
S.N Question Answer
o
Syllabus
S.No. Descriptions
1 Computers: Computer, Characteristics of Computers, History of Computers,
Classification of Computers, Applications of Computers, Basic Organization of a
Computer. Data Representation, using spread sheets for basic operations on data and
visualize the data. Practical: 1. Office Software for documentation and presentation 2.
Spread sheets for calculations and data. Visualization
2 Computational Thinking: What is Computational Thinking, Decomposition,
Abstraction, Real World Information to Computable Data, Number Systems,
Conversions among Number systems, what is Logic, Boolean Logic, Applications of
Propositional Logic. Activities: 1. Solving problems based on number systems and
logics. 2. Virtual Demonstration of Computational thinking
3 Problem Solving Basics: Problem Definition, Logical Reasoning, Decomposition,
Software Design Concept of an Algorithm, Algorithm Representation – Algorithm
Discovery – Iterative Structures – Recursive Structures – Efficiency and Correctness -
Implementation of Algorithms - Fundamental Algorithms: Exchanging the values of
two variables, Counting, Summation of a set of numbers, Factorial computation,
Generation of Fibonacci Sequence, Reversing the digits of an Integer, Base
Conversion. Activities: Algorithm Development for simple mathematical problems
4 Programming Languages: Program Development Life Cycle, Program Design Tools,
Algorithms, Flowcharts, Pseudocodes, Role of Algorithms, Programming Languages,
Programming Paradigms Traditional Programming Concepts, Procedural Units,
Language Implementation, Declarative Programming. Activities: Flowchart design for
simple mathematical problems
5 Scratch Programming: What is Scratch, Scratch Programming Environment, Paint
Editor, Scratch Blocks, Arithmetic Operators and Functions, Use Motion Commands,
Pen Commands and Easy Draw, Looks Palette, Sound Palette, Power of Repeat, Data
Types, Variables, Getting Input from Users. Making Decisions, Comparison
, Operators, Decision Structures, Logical Operators, Repetition, Loop Blocks, Stop
Commands, Counters, Nested Loops, Recursion, String Processing, String
Manipulation, Lists, Dynamic Lists, Numerical Lists, Searching and Sorting Lists.
Activities: 1. Creation of Functional Block for simple mathematical problems 2.
Drawing and Painting operations 3. Scratch Animation for understanding Conditional
and Loop statements. 4. Draw artistic, geometric patterns and create games. 5. Scratch
Programs for applied scientific computing and data manipulations
6 App Development: Building Apps using problem, solving techniques on any app
development platform, Modeling, incremental and iterative, reuse, modularization,
algorithmic thinking, abstracting and modularizing, decomposition, testing and
debugging. Activities: Sample App Developments for societal problems.
Unit-I
Computers
Two mark Question and Answers
1. Computer
A computer is an electronic device that can store, process, and communicate information. It
is a machine that can perform a wide range of tasks, from simple calculations to complex
simulations, based on a set of instructions called a program.
Characteristics of Computers
1. Automatic: Computers can perform tasks automatically without human intervention.
2. Speed: Computers can process information at high speeds, often measured in
milliseconds or microseconds.
3. Accuracy: Computers can process information with high accuracy, reducing errors and
improving reliability.
4. Storage: Computers can store large amounts of data, which can be retrieved and
processed as needed.
5. Versatility: Computers can perform a wide range of tasks, from simple calculations to
complex simulations.
History of Computers
1. First Generation (1940s-1950s): Vacuum tubes were used as electronic switches.
2. Second Generation (1950s-1960s): Transistors replaced vacuum tubes.
3. Third Generation (1960s-1970s): Integrated circuits were introduced.
4. Fourth Generation (1970s-1980s): Microprocessors were developed.
5. Fifth Generation (1980s-present): Artificial intelligence and parallel processing were
introduced.
,Classification of Computers
1. Mainframe Computers: Large, powerful computers used for complex applications.
2. Minicomputers: Smaller, less powerful than mainframes, but more powerful than
microcomputers.
3. Microcomputers: Small, personal computers, including desktops, laptops, and mobile
devices.
4. Supercomputers: High-performance computers used for complex simulations and
calculations.
5. Embedded Computers: Specialized computers used in devices, such as appliances and
vehicles.
Applications of Computers
1. Business: Accounting, payroll, inventory management, and customer relationship
management.
2. Education: Online learning, educational software, and research.
3. Healthcare: Medical records, diagnosis, and treatment.
4. Science and Engineering: Simulations, data analysis, and research.
5. Communication: Email, social media, and video conferencing.
Basic Organization of a Computer
1. Central Processing Unit (CPU): Executes instructions and performs calculations.
2. Memory: Stores data and programs.
3. Input/Output (I/O) Devices: Keyboard, mouse, monitor, and printer.
4. Storage Devices: Hard drive, solid-state drive, and flash drive.
Data Representation
1. Binary: Data is represented as binary numbers (0s and 1s).
2. ASCII: Text data is represented using ASCII codes.
3. Hexadecimal: Data is represented as hexadecimal numbers (0-9, A-F).
Using Spreadsheets for Basic Operations on Data
1. Microsoft Excel: A popular spreadsheet software.
2. Google Sheets: A web-based spreadsheet software.
3. Basic Operations: Arithmetic, statistical, and logical operations can be performed using
formulas and functions.
4. Data Visualization: Charts, graphs, and pivot tables can be used to visualize data.
Some common spreadsheet functions include:
1. SUM: Calculates the sum of a range of cells.
, 2. AVERAGE: example.txt
3. COUNT: Counts the number of cells in a range.
4. IF: Tests a condition and returns a value.
Some common data visualization techniques include:
1. Bar charts: Displays categorical data.
2. Line charts: Displays trend data.
3. Pie charts: Displays proportional data.
4. Scatter plots: Displays relationships between data.
1. What is a computer?
A computer is an electronic device that can store, process, and communicate information. It
is a machine that can perform a wide range of tasks, from simple calculations to complex
simulations, based on a set of instructions called a program. (2 marks)
2. What are the characteristics of computers?
The characteristics of computers are:
1. Automatic: Computers can perform tasks automatically without human intervention.
2. Speed: Computers can process information at high speeds, often measured in
milliseconds or microseconds.
(2 marks)
3. What are the generations of computers?
The generations of computers are:
1. First Generation (1940s-1950s): Vacuum tubes were used as electronic switches.
2. Second Generation (1950s-1960s): Transistors replaced vacuum tubes.
(2 marks)
4. Classify computers based on size and processing power.
Computers can be classified into:
1. Mainframe Computers: Large, powerful computers used for complex applications.
2. Microcomputers: Small, personal computers, including desktops, laptops, and mobile
devices.
(2 marks)
5. What are the applications of computers?
Computers are used in various fields, including:
1. Business: Accounting, payroll, inventory management, and customer relationship
management.
Vadamavandal-604410.
Important Question and Answers
CS25C03 - Essential of Computing
Prepared by
V.Umapathy,
Prof. /Mech.
S.N Question Answer
o
Syllabus
S.No. Descriptions
1 Computers: Computer, Characteristics of Computers, History of Computers,
Classification of Computers, Applications of Computers, Basic Organization of a
Computer. Data Representation, using spread sheets for basic operations on data and
visualize the data. Practical: 1. Office Software for documentation and presentation 2.
Spread sheets for calculations and data. Visualization
2 Computational Thinking: What is Computational Thinking, Decomposition,
Abstraction, Real World Information to Computable Data, Number Systems,
Conversions among Number systems, what is Logic, Boolean Logic, Applications of
Propositional Logic. Activities: 1. Solving problems based on number systems and
logics. 2. Virtual Demonstration of Computational thinking
3 Problem Solving Basics: Problem Definition, Logical Reasoning, Decomposition,
Software Design Concept of an Algorithm, Algorithm Representation – Algorithm
Discovery – Iterative Structures – Recursive Structures – Efficiency and Correctness -
Implementation of Algorithms - Fundamental Algorithms: Exchanging the values of
two variables, Counting, Summation of a set of numbers, Factorial computation,
Generation of Fibonacci Sequence, Reversing the digits of an Integer, Base
Conversion. Activities: Algorithm Development for simple mathematical problems
4 Programming Languages: Program Development Life Cycle, Program Design Tools,
Algorithms, Flowcharts, Pseudocodes, Role of Algorithms, Programming Languages,
Programming Paradigms Traditional Programming Concepts, Procedural Units,
Language Implementation, Declarative Programming. Activities: Flowchart design for
simple mathematical problems
5 Scratch Programming: What is Scratch, Scratch Programming Environment, Paint
Editor, Scratch Blocks, Arithmetic Operators and Functions, Use Motion Commands,
Pen Commands and Easy Draw, Looks Palette, Sound Palette, Power of Repeat, Data
Types, Variables, Getting Input from Users. Making Decisions, Comparison
, Operators, Decision Structures, Logical Operators, Repetition, Loop Blocks, Stop
Commands, Counters, Nested Loops, Recursion, String Processing, String
Manipulation, Lists, Dynamic Lists, Numerical Lists, Searching and Sorting Lists.
Activities: 1. Creation of Functional Block for simple mathematical problems 2.
Drawing and Painting operations 3. Scratch Animation for understanding Conditional
and Loop statements. 4. Draw artistic, geometric patterns and create games. 5. Scratch
Programs for applied scientific computing and data manipulations
6 App Development: Building Apps using problem, solving techniques on any app
development platform, Modeling, incremental and iterative, reuse, modularization,
algorithmic thinking, abstracting and modularizing, decomposition, testing and
debugging. Activities: Sample App Developments for societal problems.
Unit-I
Computers
Two mark Question and Answers
1. Computer
A computer is an electronic device that can store, process, and communicate information. It
is a machine that can perform a wide range of tasks, from simple calculations to complex
simulations, based on a set of instructions called a program.
Characteristics of Computers
1. Automatic: Computers can perform tasks automatically without human intervention.
2. Speed: Computers can process information at high speeds, often measured in
milliseconds or microseconds.
3. Accuracy: Computers can process information with high accuracy, reducing errors and
improving reliability.
4. Storage: Computers can store large amounts of data, which can be retrieved and
processed as needed.
5. Versatility: Computers can perform a wide range of tasks, from simple calculations to
complex simulations.
History of Computers
1. First Generation (1940s-1950s): Vacuum tubes were used as electronic switches.
2. Second Generation (1950s-1960s): Transistors replaced vacuum tubes.
3. Third Generation (1960s-1970s): Integrated circuits were introduced.
4. Fourth Generation (1970s-1980s): Microprocessors were developed.
5. Fifth Generation (1980s-present): Artificial intelligence and parallel processing were
introduced.
,Classification of Computers
1. Mainframe Computers: Large, powerful computers used for complex applications.
2. Minicomputers: Smaller, less powerful than mainframes, but more powerful than
microcomputers.
3. Microcomputers: Small, personal computers, including desktops, laptops, and mobile
devices.
4. Supercomputers: High-performance computers used for complex simulations and
calculations.
5. Embedded Computers: Specialized computers used in devices, such as appliances and
vehicles.
Applications of Computers
1. Business: Accounting, payroll, inventory management, and customer relationship
management.
2. Education: Online learning, educational software, and research.
3. Healthcare: Medical records, diagnosis, and treatment.
4. Science and Engineering: Simulations, data analysis, and research.
5. Communication: Email, social media, and video conferencing.
Basic Organization of a Computer
1. Central Processing Unit (CPU): Executes instructions and performs calculations.
2. Memory: Stores data and programs.
3. Input/Output (I/O) Devices: Keyboard, mouse, monitor, and printer.
4. Storage Devices: Hard drive, solid-state drive, and flash drive.
Data Representation
1. Binary: Data is represented as binary numbers (0s and 1s).
2. ASCII: Text data is represented using ASCII codes.
3. Hexadecimal: Data is represented as hexadecimal numbers (0-9, A-F).
Using Spreadsheets for Basic Operations on Data
1. Microsoft Excel: A popular spreadsheet software.
2. Google Sheets: A web-based spreadsheet software.
3. Basic Operations: Arithmetic, statistical, and logical operations can be performed using
formulas and functions.
4. Data Visualization: Charts, graphs, and pivot tables can be used to visualize data.
Some common spreadsheet functions include:
1. SUM: Calculates the sum of a range of cells.
, 2. AVERAGE: example.txt
3. COUNT: Counts the number of cells in a range.
4. IF: Tests a condition and returns a value.
Some common data visualization techniques include:
1. Bar charts: Displays categorical data.
2. Line charts: Displays trend data.
3. Pie charts: Displays proportional data.
4. Scatter plots: Displays relationships between data.
1. What is a computer?
A computer is an electronic device that can store, process, and communicate information. It
is a machine that can perform a wide range of tasks, from simple calculations to complex
simulations, based on a set of instructions called a program. (2 marks)
2. What are the characteristics of computers?
The characteristics of computers are:
1. Automatic: Computers can perform tasks automatically without human intervention.
2. Speed: Computers can process information at high speeds, often measured in
milliseconds or microseconds.
(2 marks)
3. What are the generations of computers?
The generations of computers are:
1. First Generation (1940s-1950s): Vacuum tubes were used as electronic switches.
2. Second Generation (1950s-1960s): Transistors replaced vacuum tubes.
(2 marks)
4. Classify computers based on size and processing power.
Computers can be classified into:
1. Mainframe Computers: Large, powerful computers used for complex applications.
2. Microcomputers: Small, personal computers, including desktops, laptops, and mobile
devices.
(2 marks)
5. What are the applications of computers?
Computers are used in various fields, including:
1. Business: Accounting, payroll, inventory management, and customer relationship
management.
