Take This Simple Basic Computer Test Quiz

Explanation
A keyboard is considered an input device because it allows the user to input data or commands into a computer system. It consists of a set of keys that are pressed by the user to input characters, numbers, or other symbols. The input is then processed by the computer and displayed on the screen or used for various functions. Unlike a monitor or printer, which are output devices, a keyboard is specifically designed for inputting data into the computer system.

Explanation
Today's computers are used for a wide range of purposes, including data storage, computing, and playing games. They are equipped with storage devices such as hard drives and solid-state drives, allowing users to store and retrieve large amounts of data. Computers also have powerful processors and software that enable complex calculations and computations, making them essential for various computational tasks. Additionally, computers are commonly used for entertainment purposes, with gaming being a popular activity that requires the computational power and graphics capabilities of modern computers. Therefore, the correct answer is "All of above" as it encompasses all the mentioned uses of computers.

Explanation
A gigabyte is the largest unit of data storage in the given list. It is larger than a kilobyte, megabyte, and byte. A gigabyte represents 1,073,741,824 bytes of data, which is equivalent to 1,024 megabytes or 1,048,576 kilobytes. Therefore, a gigabyte has the highest storage capacity among the options provided.

Explanation
The speed of a computer is measured in Hertz. Hertz is a unit of frequency that represents the number of cycles per second. In the context of computers, it refers to the number of instructions or operations that a computer can perform in a given amount of time. A higher frequency or Hertz value indicates a faster computer, as it can execute more instructions in a second.

Explanation
It is not possible to command a computer to create a real sandwich for you. A computer is a machine that operates based on programmed instructions and does not have physical capabilities to prepare or cook food. While a computer can provide information or assist in finding recipes for making a sandwich, it cannot physically create one.

Explanation
A DVD Reader is specifically designed to read DVD Rom discs. It is not capable of reading a Hard Disk or Flash Memory directly. Therefore, the correct answer is DVD Rom.

Explanation
A scanner is a device that converts a physical image or document into a digital format that can be stored and manipulated on a computer. It does this by using a combination of light sensors and optical lenses to capture the image and then convert it into a series of electronic signals. These signals are then processed and transformed into a digital image file that can be viewed, edited, or printed. Scanners are commonly used for tasks such as scanning documents, photographs, and artwork, allowing them to be easily stored, shared, or reproduced digitally.