Answer:(1) To manage the computer's resources, which includes central processing unit, memory, disk drives, and printers, (2) To establish a user interface
(3)To execute and provide services for applications software.
The old mainframe computers have
(1) low memory sizes
(2) slower connectivity speed
(3) Larger sizer
(4) low sophistication.
Explanation: Operating system is a system software that manages the computer resources,helps to establish user interface and it helps to provide services for application softwares.
Operating system software includes WINDOWS X,WINDOWS 7,WINDOWS 8,LINUX,etc.
Mainframe computers are computers used by large multinational companies for processing bulk data. Old mainframe computers were produced by IBM(INTERNATIONAL BUSINESS MACHINE) in the year 1952 they are classed two scientific and commercial mainframe computers with different information although they had some incompatibilities. Old mainframe computers are large in size with low processing speed, sophistication and storage compared to present day system.
<span>If it's an multiple answer question it's....
</span><span>B.) Blank the screen with black screen (or return to the slide if you are currently blank).</span>

Convert
0.625 to binary

Translate 0.625 into a fraction. We all know that 0.5 is ½. We know that the remainder, 0.125, is ⅛. Add them together, and you get ½ + ⅛ = ⅝.
Now, in binary, the positions to the right of the point are , which is ½, ¼, and ⅛ respectively.
⅝ is 5 × ⅛. 5 in binary is 101. So, ⅝ is
= 0.101
Answer:
Parsing is the process uses to divide your source code into meaningful portions; the message means that the compiler was in the process of analyzing the code when the end of the file was encountered prematurely
Explanation:
In parsing process the parser in compiler breaks code and data into smaller elements coming from lexical analysis phase.
Answer: True
Explanation: "Ignore All" button is the button that operates when the user wants to ignore the word that is flagged .Flagged words are those which chosen by user to be banned and don't want to use in future.
Ignore all button helps in the ignoring of the spelling check of the words that the user is sure about and the words that user don't want to be the part of their content.This banning is for the future use and current time as well.Thus, the statement is true.