Explanation

• Embedded computer software is designed to control a specific hardware device.
• It is stored inside electronic devices and performs dedicated functions.
• Embedded software works with hardware such as washing machines, cars, cameras, and medical devices.
• It is usually designed for specific tasks.
• Examples include firmware in routers, printers, and smart appliances.

Last verified on 07-08-2026

Explanation

• The default settings for Narrow margins in MS Word are 0.5 inches on all four sides.
• Margins control the blank space between the document text and the edges of the page.
• MS Word provides different margin options such as Normal, Narrow, Moderate, and Wide.
• The Normal margin is usually 1 inch on all four sides.
• The Narrow margin allows more text to fit on a single page.

Last verified on 07-08-2026

Explanation

• Ferric oxide is most commonly used for making magnetic recording tape.
• Magnetic tapes contain a coating of magnetic material that stores audio, video, or data signals.
• Ferric oxide (Fe₂O₃) is a commonly used magnetic compound due to its magnetic properties.
• It was widely used in audio tapes, video tapes, and data storage tapes.

Last verified on 07-08-2026

Explanation

• Superscript is text written slightly above the normal line.
• It is commonly used in mathematical powers, formulas, and footnotes.
• Example: x², a³, 10⁵
• Shortcut in MS Word: Ctrl + Shift + =

Additional information:

• In MS-Word, a subscript is a number or letter written slightly below the normal text.
• Subscript shortcut: Ctrl + =

Last verified on 29-05-2026

Explanation

• Shortcut key to switch to the next/open window is Alt + Tab.
• It allows you to quickly move between open applications or windows.
• Hold Alt and press Tab to select another open window.

Additional information:

• Windows + Tab → Open Task View.
• Alt + F4 → Close the active window.
• Windows + D → Show or hide the desktop.
• Alt + Esc → Switch between open windows in their opening order.

Last verified on 07-08-2026

Explanation

• Shift + End – Select text from the cursor to the end of the current line

Additional information:

• Shift + Home – Select text from the cursor to the beginning of the current line
• Ctrl + Shift + End – Select text from the cursor to the end of the document
• End – Move the cursor to the end of the current line
• Ctrl + End – Move the cursor to the end of the document

Last verified on 20-07-2026

Explanation

• The standard arrangement of keys on a keyboard is called the QWERTY arrangement.
• The name QWERTY comes from the first six letters in the top alphabetic row: Q, W, E, R, T, Y.
• It was developed from the keyboard layout used in early typewriters.
• QWERTY became the most widely used keyboard layout.

Last verified on 07-08-2026

Explanation

• The output quality of a printer is measured by Dot Per Inch (DPI).
• DPI indicates the number of dots a printer can produce in one inch.
• A higher DPI generally means higher print resolution and sharper output.
• Common printer resolutions include 300 DPI, 600 DPI, and 1200 DPI.

Last verified on 07-08-2026

Explanation

• A Voice Response Unit (VRU) is an output device that produces an audio response using words or messages recorded on a magnetic medium.
• It converts stored voice messages into audible output for the user.

Additional information:

• Voice Recognition Unit is an input device used to recognize spoken words.
• Magnetic tape is a storage medium.

Last verified on 07-08-2026

Explanation

• The Operating System is built directly on the hardware.
• It acts as an interface between the computer hardware and application software.
• The OS manages resources such as the CPU, memory, storage, and input/output devices.
• Application software runs on top of the operating system.
• Examples of operating systems include Windows, Linux, macOS, and Android.

Last verified on 07-08-2026