storage

                                                 Storage

ROM and RAM

ROM stands for (Read only memory)
            
                         and

RAM stands for (Random Access memory)

The difference between Rom and Ram

Rom can only be read by computer
The contents of the chips are not lost when the power is switched off.
The rom is non volotite

Ram
Ram can be both read and written by the computer
Contents are lost when the power is switched off.
Ram is volotite.

There are many types of storage devices these are
Optical media such as DVD
Electronic media such as Pen Drives

DVD and CD
DVD stands for digital versatile disk
A DVD can store more data than the CD can do as the DVD can store information on two levels, in smaller pits and somethimes on both two levels
A CD is similar to DVd but it can store less data than DVD.

Database

Database

What is database?

Database is the set of information on one subject.

 

What does database contain?

A database contains a number of tables, each table containing a number of records and every record has a number of fields that each field containing a number of data items.

 

What is a table/File?

A table/File is a collection of records containing the same fields.

 

What is a record?

A record is a group of information on a particular item.

 

What is a Field?

A field is one property common to all the items in a table.

 

What is field name?

A field name is the title given to one field

 

What is data item?

Data item is one piece of information foun in a record.

 

 

 

 

spreed sheet

Spreed sheet

                 http://www.youtube.com/watch?feature=player_embedded&v=Q-POGqYyUBs

Logic circuit

 

 

 

Logic circuits

 

 

http://www.youtube.com/watch?v=CEYabEK09lU&feature=player_embedded



Internet and e-mail

Internet and Email

 

 

To connect with the internet you need *computer

 

                                                             * modem

                                                              

                                                            *ISP

                                                             

                                                            * A telephone line

 

What is a browser?

Web browser displays web pages

 

What is search engine?

Search engine is when you type keywords and it display all the web pages related

 

What is History folder?

History folder is when you visit and store the link there.

 

What is a bookmark?

A bookmark are the websites that you are interested in and avoid to type the URL

 

E-mail is when sending letters

 

Inbox is where you stores the e-mail that you receive.

Outbox where you wrote but you are waiting to be send

 

Sent items is where actually saved that you had send

 

Delete item store those e-mails that you delete.

 

 

 

 

 

                                                          

 

 

word processing

 

Word Processing

 

 

A word-processing application is one of the most commonly used computer application

 

 Two features that the word processing are * mail-merge

 

                                                                      * header and footer

 

 

Word processor has many advantages two of them are * you have the function of mail-merge.

 

                                                                                        * you have a spell checker and thesaurus.

 

 

What is a spell check?

 

Spell check means checks the spelling for an individually word.

 

 

What  are bullets and numbering?

 

Bullets and numbering are the list of points that show different items

 

 

What is mail-merge

 

Mail merge is when created a personalised letter and combine it with address list to create a number of personalised letters.

Word Processor

                                                                   Word Processor

Why is word used?
Word is used for the creation of document.

Some  functions of word processor :Layout setting=Margins, tabs.... can be set and be reset anywhere in the document.
                                                          :Style sheets=when you apply a  whole group of formats in one simple task such as Heading 1.
                                                          :Spelling checker and Thesaurus=spelling for an individual word, marked block of text or an entire document can be checked.
                                                           :Footer and Header: Footer printed at the end of a page or document and Header is printed at the top of a page or document.
                                                           : Search and replace, Move and copy= Any occurence of text can be replaced with another block of text. You can mark words and even block of text and move them elsewhere in the document or copy them throughout the document.

What is mail merge?
Mail merge is used to create personalised letters by combining together form letter and a list of data.

What is table of contents?
Usually table of contents are used to get an overview of the topics discussed in the document.

What are indexes?
 Indexes are when you mark some words from your document and then build in an index. The index list the terms and topics discussed in a document with the page number they appear on.