**King Saud University** **College of Computer and Information Sciences** **Department of Computer Science**
**First Midterm Exam - Summer Semester 1435 AH** **Course Title: Introduction to Computer Science (101 CS)**
**Student Name:** ............................................................................................................... **University ID:** .......................................................................................................... **Exam Date:** 26 / 8 / 1435 AH **Time:** Two Hours **Grade:** 25 Marks
**Important Instructions:** * Answer all questions. * Write your answers clearly and legibly. * Calculator use is not permitted. * Mobile phones or any other electronic devices are prohibited. * If there is any ambiguity in a question, consult the supervisor.
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**Question One:** (5 Marks) Determine whether the following statements are true or false. Write (T) for true statements and (F) for false statements.
1. ( ) Binary digits (Bits) are the basic units of data in a computer. 2. ( ) The Central Processing Unit (CPU) is responsible for storing data and programs. 3. ( ) Random Access Memory (RAM) is permanent memory that retains data even after the computer is turned off. 4. ( ) An Operating System is a program that allows the user to interact with the computer. 5. ( ) A Hard Disk is an example of secondary storage media.
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**Question Two:** (6 Marks) List three (3) commonly used input devices and three (3) output devices for a computer.
* **Input Devices:** 1. ....................................................... 2. ....................................................... 3. .......................................................
* **Output Devices:** 1. ....................................................... 2. ....................................................... 3. .......................................................
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**Question Three:** (4 Marks) Convert the following decimal numbers to the binary number system:
1. 13 = ....................................................... (in binary) 2. 25 = ....................................................... (in binary)
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**Question Four:** (10 Marks) Complete the following table, providing one example for each term:
| Term | Definition | Example | | :------------------- | :----------------------------------------------------------------------------- | :-------------------------------------------- | | **Data** | Raw facts or symbols that have no direct meaning. | ............................................. | | **Information** | Data that has been processed and organized to have meaning and usefulness. | ............................................. | | **Program** | A set of instructions written in a specific language to perform a specific task on a computer. | ............................................. | | **Network** | A group of computers and devices connected to each other to exchange information and resources. | ............................................. | | **Graphical User Interface (GUI)** | A user interface that uses visual elements like icons and windows to facilitate interaction. | ............................................. |