Grade 3 Computer

The correct answer is "Recycle bin". The icon represents a bin or trash can, which is commonly associated with discarding or deleting files. In the context of a computer, the recycle bin is where deleted files are stored temporarily before they are permanently removed from the system. This icon is commonly found on desktops or file explorer windows, indicating the presence of the recycle bin feature.

The brain of the computer is called the CPU, which stands for Central Processing Unit. The CPU is responsible for executing instructions and performing calculations in a computer system. It is considered the most important component of a computer as it controls and coordinates all the other hardware and software components. Without the CPU, a computer would not be able to function and process information. Therefore, the correct answer is CPU.

The correct answer is printer because it is the only option that is commonly used to print documents or images. Scanners are used to scan documents or images, and fax machines are used to send and receive faxes.

To erase the letter, we must press the Backspace key. The Backspace key is commonly used to delete the character before the cursor in a text document or input field. By pressing this key, the previous character is removed, allowing for corrections or changes to be made.

The statement is true because ALU does stand for Arithmetic Logic Unit. The ALU is a crucial component of a computer processor that performs arithmetic and logical operations on data. It is responsible for carrying out tasks such as addition, subtraction, multiplication, division, and logical comparisons.

The password "C4lifoRn12" would make the best password because it includes a combination of uppercase and lowercase letters, numbers, and special characters. This makes it more complex and harder to guess or crack. The other options, "Hello" and "School," are simple and easily guessable passwords that do not meet the criteria for a strong password.

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Hardware refers to the physical components of a computer that can be touched and manipulated, such as the keyboard, mouse, monitor, and CPU. These components are tangible and can be physically seen and felt. Therefore, the statement that the parts of the computer that can be touched are called hardware is true.

The correct answer is "Machine" because a computer is a device that can perform tasks and calculations automatically or under the control of a program. It is a physical object that consists of various components such as a processor, memory, and input/output devices. The term "machine" accurately describes the nature of a computer as a mechanical device capable of processing information.

Computers are indeed used in airports to book tickets. This is a common practice in the airline industry, where passengers can either book their tickets online through airline websites or use self-service kiosks at the airport. These computers provide a convenient and efficient way for travelers to book their flights, select seats, and make payments. Additionally, airline staff also use computers to assist customers with ticket booking and manage flight reservations. Therefore, the statement "In airports, computers are used to book tickets" is true.

A UPS (Uninterruptible Power Supply) is a device that provides backup power to a computer or other electronic devices when the main power supply is interrupted or fails. It ensures that the computer continues to work for a certain period of time, allowing the user to save their work and safely shut down the system.

A red, wavy underline in a document indicates a possible spelling error. This is a common feature in word processing software where the program automatically detects potential spelling mistakes and underlines them in red. Users can then review and correct these errors. Therefore, the statement "A red, wavy underline in a document means a possible spelling error" is true.

Computer parts that can be physically touched are referred to as hardware. Hardware includes components such as the central processing unit (CPU), memory, storage devices, input and output devices, and other physical components that make up a computer system. Systems, platforms, and software are not physical components and do not fall under the category of hardware.

A piece of personal information refers to information that identifies or relates to an individual. In this case, the only option that fits this definition is "Your home address." This information is specific to an individual and can be used to locate or contact them, making it personal and sensitive. The other options, such as the temperature outside or the number of students at a dance, do not pertain to an individual's personal identity or privacy.

Opening e-mails from people you know is a safe practice when online because it helps to avoid potential phishing scams or malicious attachments. By only opening e-mails from trusted sources, you reduce the risk of falling victim to cyberattacks or having your personal information compromised. It is important to exercise caution and verify the sender's identity before opening any e-mail, especially if it contains suspicious or unexpected content.

The "Save As" command allows the user to save a file with a new name or at a different location. This command is useful when the user wants to create a copy of the file or save it in a different format without modifying the original file. The "Save" command, on the other hand, simply saves the file with its current name and location. The "Close" command is unrelated to saving a file and is used to close the current window or application.

A keyboard is classified as an input device because it allows the user to input data or commands into a computer system. The user can type characters, numbers, and special symbols on the keyboard, which are then processed by the computer. The keyboard does not produce any output on its own, but instead sends the input to the computer for processing and generating an output. Therefore, the correct answer is "Input".

The correct answer is "Control Unit" because in computer architecture, the control unit is responsible for coordinating and controlling the operations of the computer's hardware components. It manages the execution of instructions, fetches data from memory, and directs the flow of data between various components. The control unit plays a crucial role in ensuring that instructions are executed correctly and in the correct sequence.

A hand-held input device that controls the insertion point location is a mouse. A mouse is a common peripheral device used to move the cursor on a computer screen and select or manipulate objects. It allows users to interact with graphical user interfaces and navigate through different applications and documents by moving the mouse across a flat surface. The mouse typically has one or more buttons that can be clicked to perform various actions, such as opening files or selecting text.

Software refers to the set of instructions that tells the hardware in a computer what to do. It is a collection of programs, data, and instructions that enable a computer to perform specific tasks. Unlike hardware, which includes physical components, software is intangible and can be stored and executed electronically. It includes operating systems, applications, and programming languages that allow users to interact with the computer and perform various functions. Therefore, software is the correct answer in this context.

Emoticons are generally considered informal and casual forms of communication. Therefore, it is appropriate to use them in e-mails to friends, where the tone is typically more relaxed and personal. In book reports for school or letters to the principal, however, a more formal and professional tone is expected, making the use of emoticons inappropriate.

The statement is false because a speaker is an output device, not an input device. Input devices are used to input data or commands into a computer, while output devices are used to display or output information from a computer. A speaker is used to output sound or audio, making it an output device.

The Maximize button is used to expand a window to fill the entire screen. This allows the user to make the most of their screen real estate and view the content in the window without any distractions or other windows in the background. It is a convenient feature that helps users focus on the specific window they are working on.

Both the monitor and speaker are considered output devices. A monitor displays visual output such as images and text, while a speaker produces audio output. Therefore, both devices fall under the category of output devices as they deliver information or data from the computer to the user.

The given correct answer is "Input Device". An input device is a hardware device that allows users to input data or commands into a computer. It enables the computer to receive information and instructions from the user. Examples of input devices include keyboards, mice, scanners, and joysticks. These devices send signals or data to the computer, allowing users to interact with and control the computer system.

Computer hardware refers to the physical components of a computer system, such as the keyboard (for input), monitor (for output), and mouse (for input). Microsoft Word, on the other hand, is a software application, a program that tells the computer what to do. Software is a set of instructions that the hardware executes to perform tasks.

In software applications such as Microsoft Word, a document is called a file. A file is a collection of data that is stored on a computer and can be accessed and manipulated by the user. In the context of Microsoft Word, a document file contains text, images, and other elements that make up a document. The user can create, edit, and save the document file using the software application. Therefore, the correct answer is File.

The delete key does not erase text to the right of the insertion point. It actually erases text to the left of the insertion point.

When saving a file for the first time, the "Save as" command is used. This command allows the user to specify the file name and location where the file should be saved. It is different from the regular "Save" command, which is used to save changes to an existing file. The "Save as" command ensures that the file is saved with a new name and location, creating a new file in the process.

The given statement is false because the "title bar" is located at the top of the window and identifies the window itself, not specifically as a MS Word document. The title bar displays the name or title of the document or application that is currently open in the window.