Q11. Who is the developer of mouse? (A) Dennis Riche (B) Douglas Engelbart (C) Christopher Latham Sholes (D) Charles Babbage
Ans: (B) Douglas Engelbart
● Explanation:
The computer mouse was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960s and was patented on November 17, 1970.
Q12. Computer mouse is used for? (A) Drawing (B) Creating lines (C) Selecting options (D) All of these
Ans: (D) All of these
● Explanation:
An important function of a computer mouse is to move the cursor from place to place, open an icon, close or open an application, select a folder, a text file, or drag-and-drop. All this work is done through the mouse in a computer.
Q13. Computer mouse is an essential part of? (A) CPU (B) Software (C) Hardware (D) Motherboard
Ans: (C) Hardware
Q14. Who is the developer of Keyboard? (A) Dennis Riche (B) Douglas Engelbart (C) Christopher Latham Sholes (D) Charles Babbage
Ans: (C) Christopher Latham Sholes
● Explanation:
The Keyboard (QWERTY) was invented by Christopher Latham Sholes in 1868 during the Second US Industrial Revolution era of inventions (1850 – 1914).
Q15. Which one is the most popular keyboard? (A) USB Keyboard (B) Qwerty Keyboard (C) Multimedia Keyboard (D) Mechanical Keyboard
Ans: (B) Qwerty Keyboard
Q16. Taskbar is used for? (A) Start a program (B) Navigation program (C) Switching between program (D) All of the above
Ans: (D) All of the above
● Explanation:
The taskbar is the access point for programs displayed on the desktop, even if the program is minimized. Such programs are said to have desktop presence. With the taskbar, users can view the open primary windows and certain secondary windows on the desktop, and can quickly switch between them.
Q17. From where can we change the User Account Name? (A) Setting (B) Computer Panel (C) Code Panel (D) Control Panel
Ans: (D) Control Panel
● Explanation:
The Control Panel is a component of Microsoft Windows that provides the ability to view and change system settings. It consists of a set of applets that include adding or removing hardware and software, controlling user accounts, changing accessibility options, and accessing networking settings. Additional applets are provided by third parties, such as audio and video drivers, VPN tools, input devices, and networking tools.
Q18. How can we bring ‘My Computer’ icon on the desktop, if it is not there? (A) From Setting (B) From Wallpaper (C) From Display Properties (D) From Explorer
Ans: (C) From Display Properties
● Explanation:
The Display Properties window allows you to configure a wide variety of settings that affect the Desktop, display, and appearance.
Q19. When you delete a file from the computer, where does it go? (A) Taskbar (B) Hard disk (C) Recycle bin (D) None of these
Ans: (C) Recycle bin
● Explanation:
Recycle Bin is a place where deleted items are temporarily stored in Windows unless they are permanently deleted. It provides users the option to recover deleted files in Windows operating systems since Windows 95. Until the files are not permanently deleted by the user, these are not permanently removed from the hard drive; all these deleted files or folders are stored in the Recycle Bin. Also, Recycle Bin allows you to recover all stored files in it to their original storage location.
Q20. Early computers such as ENIAC, EDVAC, and UNIVAC-I can all be classified into? (A) 1st Generation (B) 2nd Generation (C) 3rd Generation (D) 4th Generation
Ans: (A) 1st Generation
● Explanation:
1. First Generation Computers (1942 to 1954) – UNIVAC1, ENIAC, IBM 701 and IBM 650, etc
2. Second Generation of Computers (1955 to 1964) – IBM 1401, IBM 7094 AND IBM 7090, UNIVAC 1107, and so on.
3. Third Generation of Computers (1965 to 1974) – IBM 370, IBM 360, UNIVAC 1108 and so on.
4. Fourth Generation of Computers (1975– till now )- STAR 1000, APPLE II, IBM PC, and so on.
5. Fifth Generation of Computers ( Still in Process)-laptops, desktops, tablets, smartphones, etc.
