The influence of advertisments in our life
What is HTML?
HyperText Markup Language (HTML) is the main markup language for creating web pages and other information that can be displayed in a web browser. HTML stands for Hyper Text Markup Language
HTML is a markup language
A markup language is a set of markup tags
The tags describe document content
HTML documents contain HTML tags and plain text
HTML documents are also called web pages
HTML markup tags are usually called HTML tags
HTML tags are keywords (tag names) surrounded by angle brackets like HTML tags normally come in pairs like and
The first tag in a pair is the start tag, the second tag is the end tag The end tag is written like the start tag, with a forward slash before the tag name Start and end tags are also called opening tags and closing tags content
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“HTML tags” and “HTML elements” are often used to describe the same thing. But strictly speaking, an HTML element is everything between the start tag and the end tag, including the tags: HTML Element:
This is a paragraph.
HTML has several new input types for forms. These new features allow better input control and validation. This chapter covers the new input types:
If you’ve ever used Microsoft Access forms to enter any quantity of data, you know how tedious and time consuming it can be. If you enter data regularly, becoming familiar with data entry and navigation shortcuts can save you significant time and effort You’re probably aware of some of the basic shortcut keys, and hopefully use them regulary : [Tab] sets focus to the next field.
[Ctrl]+[Enter] inserts a new line in multi-line controls.
[Ctrl]+[C] copies the selected text onto the clipboard.
[Ctrl]+[X] cuts the selected text, and put it on the clipboard. [Ctrl]+[V] pastes the clipboard contents.
[Ctrl]+[F] opens the Find dialog.
[Ctrl]+[Z] undoes the last action.
[Ctrl]+[A] selects all text in the current field.
[Shift]+[F2] opens zoom box to edit the current field in its own, larger, dialog box. [Spacebar] toggles the value of a check box or option button. [F7] checks spelling.
[Esc] undoes changes to the current field or the current record (press [Esc] twice to undo both).
Putting information in a spreadsheet
Things you can do to cells
Copying and Pasting formulas
Absolute Addresses: No More Magic
Graphs and Charts
A spreadsheet is made up of lots of little boxes called *cells*. Each cell can hold a number, some text, or a formula which performs some arithmetic on numbers. Each cell refers to a specific spot in memory.
Each cell also has a unique address; cells are addressed by a column-letter and a row-number. If you’re familiar with the old game “Battleship”, you’ll be quite comfortable with cell addressing.
Each cell has a particular data type, depending on what’s in it. Although it looks as if there are a ton of different data types, there are really only three. Ranges
Any rectangular group of cells is called a range. Ranges are useful in various formulas that can work on a large number of cells at a time (e.g., the sum function, which adds up the values in all the cells in a given range). Ranges are defined by giving their upper-left-hand corner cell address followed by a colon on the lower-right-hand-corner cell address. Sometimes you will see ranges with .. between the cells: EG (A1..A10), (B5..C9). A1:A10
The first ten cells in column A
The first four cells in row 1
The first three cells of columns A and B (or the first two cells of each of the first three rows, depending on how you look at it). B1:B1
A very small range — just the one cell, B1 — but still valid and still useful.