Answer in one word or sentence:-
a) Which types of mouse use laser technology to detect the motion of the ball?
b) Dot-matrix printer is an example of which types of printer?
c) What is the measurement of the data transfer rate of CD-ROM?
d) Who introduced the concept of Zero?
e) Which button is used, in MS-Excel, to perform addition of a range in a cell?
f) How many rows are there in Excel worksheet?
g) Which box shows the address of the active cell.
h) How many types of data we can enter in a worksheet?
i) What is the function of clear button in the Editing group?
j) Which function key is used to edit cell contents?
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Answers
Answer:
Optomechanical or Optical-mechanical Mouse
The device is a combination of optical and mechanical technologies, wherein, the ball is present but the mouse movement is detected optically leading to more accuracy.
The dot matrix printer is an impact printer. It prints by striking a ribbon. A few versions of Impact printers are chain wheel,drum and etc.Nov 7, 2015
Triple-speed refers to the speed at which the CD-ROM drive transfers data from the disk to the computer. Standard CD-ROM drives have a transfer speed of 150 kilobytes (roughly 150,000 characters) a second. A double-speed drive, which is the minimum one should consider these days, has a transfer rate .
Brahmagupta
"Zero and its operation are first defined by [Hindu astronomer and mathematician] Brahmagupta in 628," said Gobets. He developed a symbol for zero: a dot underneath numbers.
AutoSum button
Explanation: The quickest way to sum a range of cells is to use the AutoSum button. It automatically enters a SUM function in the selected cell. The SUM function totals one or more numbers in a range of cells.
Name Box
In Excel, the Name Box refers to an input box directly to the left of the formula bar. The Name Box normally displays the address of the "active cell" on the worksheet. You can also use the name box to quickly create a named range. Another use for the Name Box is to navigate quickly to any range in a worksheet.
In Excel, the worksheet consists of a grid of columns and rows that form cells. You enter three types of data in cells: labels, values, and formulas. Labels (text) are descriptive pieces of information, such as names, months, or other identifying statistics, and they usually include alphabetic characters.
On the Home tab, in the Editing group, click the arrow next to the Clear button, and then do one of the following: Toclear all contents, formats, and comments that are contained in the selected cells, click Clear All.
F2
First, the keyboard shortcut for editing a cell is F2 on Windows, and Control + U on a Mac. With Excel's default settings, this will put your cursor directly in the cell, ready to edit. You can also double-click a cell to edit.
Explanation:
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