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WorksheetsGrade 7 - Revision
Total questions: 27
Worksheet time: 5hrs 30mins
Have you typed your name, class, and class number? If not, please go back and type them
Yes
No
What does RAM stand for?
Random Access Memory
Rapid Access Module
Random Allocation Memory
Read Access Memory
What is the main function of ROM?
The main function of ROM is to store firmware and system boot instructions. (BIOS - Basic Input/Output System)
To increase the speed of the CPU.
To store temporary data during processing.
To provide additional storage for applications.
Name one advantage of using a tablet over a laptop.
Better multitasking capabilities.
Higher processing power.
Larger screen size.
Increased portability.
What does DVD-RW allow you to do that DVD-R does not?
DVD-RW allows rewriting data, whereas DVD-R does not.
DVD-RW cannot be used for video playback.
DVD-RW is only compatible with older players.
DVD-RW can store more data than DVD-R.
What is the purpose of a USB drive?
The purpose of a USB drive is to store and transfer data.
To play video games
To connect to the internet
To charge electronic devices
Define system software
System software is only used for gaming applications.
System software is software that manages hardware and provides a platform for application software.
System software is primarily designed for web browsing.
System software is a type of hardware that enhances performance.
What is the difference between application software and system software?
System software is designed for user-specific tasks.
Application software performs specific user tasks, while system software manages hardware and provides a platform for applications.
Application software is only for mobile devices.
Application software manages hardware components.
What is a driver program used for?
To manage hardware resources.
To compile source code into executable files.
To test and execute other programs or modules.
To create new software applications.
How do you convert the binary number 1010 to decimal?
10
1011
1000
11
Volatile memory is a type of computer memory that temporarily stores data (临时存储数据) while the device is (a) . When the power is turned off or interrupted, the data stored in volatile memory is (b) .
Match the following: Types of operating system
Microsoft Windows
iOS
Linux
Xiaomi Hyper
Android
Volatile memory is a type of computer memory that temporarily stores data while the device is powered on. When the power is turned off or interrupted, the data stored in volatile memory is lost.
Give an example.
An example of volatile memory is RAM (Random Access Memory).
Cache memory
ROM (Read-Only Memory)
Hard disk drive (HDD)
Give an example about non-volatile memory.
Random Access Memory (RAM)
CD-ROM
USB flash drive
An example of non-volatile memory is a ROM.
Match the following
LED
PIR Sensor
Servo
microbit
Connection
How does the CPU affect a computer's performance?
The CPU is irrelevant to data processing.
The CPU only affects graphics quality.
The CPU directly affects a computer's performance by determining how quickly and efficiently it can execute instructions and process data.
The CPU has no impact on performance.
Give an example of a device that can function as both an input and output, and explain why.
What are three major factors affect CPU performance?
Why is it necessary to install driver programs when connecting a new hardware device (e.g., a printer, graphics card, webcam) to your computer?
Drivers lower the device's electrical power consumption.
Drivers are software enabling operating system to correctly control hardware.
Drivers allow the device to connect wirelessly to the internet.
Drivers are only for wireless, not for wired connections.
In Tinkercad (when programming Arduino), what do the HIGH and LOW values typically represent when used with the digitalWrite(pin, HIGH); or digitalWrite(pin, LOW); commands?
HIGH means the LED will blink fast, and LOW means it will blink slowly.
HIGH supplies 12V to the pin, while LOW supplies 0V.
HIGH sets the digital pin to a high voltage level (typically 5V or 3.3V, ON), while LOW sets it to a low voltage level (typically 0V, OFF).
HIGH means the pin is receiving a signal from a sensor, while LOW means it's sending a signal out.
What does resolution refer to in a display?
Resolution is the brightness level of a display.
Resolution refers to the refresh rate of a display.
Resolution indicates the color depth of a display.
Resolution refers to the number of pixels in a display, defined by width and height.
Which of the following USB versions generally offers the highest theoretical data transfer rate?
USB 1.0
USB 2.0
USB 3.0
What does RGB stand for in color representation?
Red, Green, Yellow
Red, Green, Blue
Blue, Yellow, Pink
Cyan, Magenta, Black
An optical disc is a (a) plastic covered with (b) .
Which of the following best describes the main difference between RAM (Random Access Memory) and a SSD in a computer system?
RAM stores permanent files, while a SSD only stores temporary data when the computer is running.
RAM is much faster and loses its data when the computer is turned off, while a SSD is slower but keeps data permanently even without power.
RAM can only store pictures and videos, while a SSD stores all other types of files.
RAM is used to connect the computer to the internet, while a SSD is the only place to install programs.
Which type of software is designed to perform specific tasks for the user, such as word processing, gaming, web Browse, or photo editing?
System Software
Application Software
Malware
Driver Programs
