ICT: A Revision Guide for Standards VII (Lessons 1-5) 2025-26
✨ Revision Worksheet – Class VII
📘 Lesson 1: Basic Concepts of Operating System
| Column A | Column B |
|---|---|
| 1. Kernel | b. Manages hardware & software resources |
| 2. Windows 10 | c. Graphical operating system by Microsoft |
| 3. Linux | a. Open-source operating system |
| 4. UNIX | d. Multi-user, multitasking OS |
| 5. Shell | e. Interface between user & operating system |
Q1. What are the main layers in an operating system?
A1. The main layers are Kernel, Shell, and Application Layer.
Q2. What is Microsoft Windows?
A2. Microsoft Windows is a graphical operating system developed by Microsoft, widely used in personal computers.
Q3. What is Windows 10?
A3. Windows 10 is an advanced version of Windows released in 2015, offering features like Cortana, Task View, and improved security.
Q4. What is UNIX and where is it used?
A4. UNIX is a multi-user, multitasking operating system mainly used in servers, workstations, and mainframes.
Q5. What is Linux and why is it popular?
A5. Linux is a free and open-source operating system; it is popular because it is secure, customizable, and community-driven.
✨ Revision Worksheet – Class VII
📘 Lesson 2: Computer Number System
| Column A | Column B |
|---|---|
| 1. Binary Number System | c. Base 2 |
| 2. Decimal Number System | b. Base 10 |
| 3. Octal Number System | a. Base 8 |
| 4. Hexadecimal System | e. Base 16 |
| 5. ASCII | d. Code for representing characters |
Q1. What is a number system?
A1. A number system is a way of representing numbers using digits and a base.
Q2. What is the Binary Number System?
A2. The Binary System uses digits 0 and 1 and has base 2.
Q3. What is the Decimal Number System?
A3. The Decimal System has base 10 and uses digits 0–9.
Q4. What is the Hexadecimal Number System?
A4. The Hexadecimal System has base 16 and uses digits 0–9 and letters A–F.
Q5. What is ASCII used for?
A5. ASCII is a coding system used to represent letters, numbers, and symbols in computers.
✨ Revision Worksheet – Class VII
📘 Lesson 3: Statements in Small Basic
| Column A | Column B |
|---|---|
| 1. Assignment Statement | a. Assigns a value to a variable |
| 2. Condition Statement | b. Executes code only if condition is true |
| 3. If Statement | c. Executes code only if condition is true |
| 4. If…Else Statement | d. Chooses between two blocks of code |
| 5. Looping Statement | e. Executes a block of code repeatedly |
Q1. What is an Assignment Statement in Small Basic?
A1. An Assignment Statement is used to assign a value to a variable. Example: x = 10.
Q2. What is the purpose of a Condition Statement?
A2. A Condition Statement checks whether a condition is true or false before executing code.
Q3. What is an If Statement?
A3. An If Statement executes a block of code only when the condition is true.
Q4. What is an If…Else Statement?
A4. An If…Else Statement lets the program choose between two blocks of code based on a condition.
Q5. What is a Looping Statement?
A5. A Looping Statement allows a block of code to run repeatedly, such as using For or While loops.
Q6. What is a While Loop?
A6. A While Loop repeats code continuously as long as the condition is true.
✨ Revision Worksheet – Class VII
📘 Lesson 4: Charts in MS Excel
| Column A | Column B |
|---|---|
| 1. Column Chart | a. Used for comparing values with vertical bars |
| 2. Pie Chart | b. Represents data in circular slices (percentages) |
| 3. Bar Chart | c. Displays data in horizontal bars |
| 4. Line Chart | d. Shows trend of data over time |
| 5. Area Chart | e. Shows magnitude of change with filled colors |
Q1. What are charts in MS Excel?
A1. Charts are graphical representations of data that make it easier to understand and compare values.
Q2. What are the main components of a chart?
A2. The main components are Title, Axis, Legend, Data Series, and Gridlines.
Q3. What is a Combination Chart in Excel?
A3. A Combination Chart is a chart that combines two different chart types, such as column and line, in one chart.
Q4. What is a Sparkline in Excel?
A4. A Sparkline is a tiny chart inside a cell that provides a quick visualization of data trends.
Q5. What is the difference between a Pie Chart and a Bar Chart?
A5. A Pie Chart shows data as percentages of a whole, while a Bar Chart shows data using horizontal bars for comparison.
✨ Revision Worksheet – Class VII
📘 Lesson 5: Advanced Features of Excel
| Column A | Column B |
|---|---|
| 1. Auto Fill | a. Automatically fills series like months or days |
| 2. Custom List | b. Creates user-defined list of values |
| 3. Sorting | c. Arranges data in ascending or descending order |
| 4. Filtering | d. Filters data based on specific criteria |
| 5. Conditional Formatting | e. Format cells based on conditions |
Q1. What is Auto Fill in Excel?
A1. Auto Fill automatically fills data such as numbers, months, or days in a series of cells.
Q2. What are Custom Lists in Excel?
A2. Custom Lists allow users to create their own predefined lists, like departments or regions, for quick filling.
Q3. What are the types of Sorting in Excel?
A3. The two main types are Ascending (A–Z, smallest to largest) and Descending (Z–A, largest to smallest).
Q4. What is Filtering in Excel?
A4. Filtering displays only the rows that meet certain criteria while hiding the others.
Q5. What is Conditional Formatting?
A5. Conditional Formatting highlights cells automatically based on rules, such as values greater than 50 in red.
✨ Revision Worksheet – Class VII
📘 Lesson 6: Computer Virus
| Column A | Column B |
|---|---|
| 1. Boot Sector Virus | a. Infects the master boot record of a disk |
| 2. File Infector Virus | b. Spreads by inserting its code into other files |
| 3. Trojan Horse | c. Appears as a useful program but is harmful |
| 4. Antivirus Software | d. Used to detect and remove viruses |
| 5. Symptoms of Virus | e. Slow performance, frequent crashes, pop-ups |
Q1. What is a computer virus?
A1. A computer virus is a program that can damage files, steal data, or disrupt system functions.
Q2. What are common symptoms of a virus attack?
A2. Symptoms include slow performance, system crashes, loss of files, and unwanted pop-ups.
Q3. Name any two types of computer viruses.
A3. Boot Sector Virus and File Infector Virus are two common types.
Q4. How can we protect a computer from viruses?
A4. We can protect it by installing antivirus software, avoiding suspicious files, and updating regularly.
Q5. What is antivirus software?
A5. Antivirus software is a program used to detect, prevent, and remove computer viruses.
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