Ahmad Computer Training Center

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Introduction to Excel
Excel cells are like many calculators arranged in a grid. Each cell is capable of making mathematical calculations. The calculation can be one such as 1 + 3 or a calculation using values in other cells in the spreadsheet. Referring to other cells requires knowing how Excel refers to cells. A spreadsheet is an address grid with the grid consisting of:
Columns labeled by letters A, B, C,… X, Y, Z, AA, AB, AC,…AX, AY, AZ, BA, BB,…IU, IV for 256 possible columns.
Rows labeled by numbers 1…16384 (Office 97 allows more rows).
Cells are specified by the intersection of the column letter and row number such as F9.
Ranges which are a group of cells specified by the address of the upper left cell and lower right cell separated by a full colon.

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What is Adobe Photo Shop?
Photo editing software through this you can give a new style to photo. Except of this we also can be use for commercial designing e.g. book title, layout of magazine and printing. To learn about adobe Photo shop first need to know about graphic types.
Type Of Graphics:
There are two types.

1. Vector or line art graphics
2. Bit map or Roster graphics
Vector or Line Art Graphics:
This graphics is absolutely collection of lives like clip art, cartoon or monogram.
Bit Map or Raster Graphics:
It consists of small colored points which is called as pixel. Usually extension of this files are TIFF, JPG, GIF or BMP.