Computer Science

EDSAC (Electronic Delay Storage Automatic Calculator) is a first-generation computer, built in the late 1940s and used vacuum tubes. The other options are later generation computers.

In Microsoft PowerPoint, pressing the F1 key opens the Help pane, providing users with assistance and information about the program.

Windows key + F1 is used to open Windows Help or the support/help interface in Windows. The F1 key is universally associated with Help in most operating systems and applications. Combining it with the Windows key still triggers the Help feature in Windows environments.

Pressing the F5 key in Microsoft PowerPoint starts the slideshow from the beginning. This is the standard shortcut for viewing a slideshow.

Ed Roberts (H. Edward Roberts) is widely recognized as the father of the personal computer for inventing the MITS Altair 8800 in 1975, which was the first commercially successful personal computer kit that sparked the home computer revolution. The options given in the question are incorrect or misspelled: 'Edward Robert' is a misspelling of Ed Roberts, 'Allen Turing' is a misspelling of Alan Turing who is known for foundational computing theory but not the personal computer, and Charles Babbage is known for early mechanical computers, not personal computers. Therefore, the correct answer is 'D. None of these' since the correct name Ed Roberts is not listed correctly among the options.

Charles Babbage is widely regarded as the 'father of the computer' because he designed the first mechanical computer, the Analytical Engine, in the 19th century. His work laid the foundation for modern computing.

WWW stands for 'World Wide Web,' which is the system of interlinked hypertext documents accessed via the internet. The other options do not represent the correct expansion of WWW.

A petabyte is larger than a terabyte, megabyte, or kilobyte. The order from smallest to largest is kilobyte, megabyte, terabyte, and then petabyte.

In word processing software like Microsoft Word, 'Narrow' is a preset page margin option, while 'Letter', 'Tabloid', and 'Legal' refer to paper sizes, not margin settings.

Pressing WinKey + D minimizes all open windows and brings the desktop to the front. WinKey + Shift + M restores minimized windows, not the desktop.