Revision Flashcards
Define software
Refers to the instructions that tell a computer what to do
Software vendor
Is a commercial organization that acquired or develops a software and sells it to end user
Operating systems
Is a computer system that supports the basic functions of a computer
System Utility
Is a software that controls a computer and develops and runs applications.
Differences between general and special purpose computer
General purpose computer is designed to perform multiple tasks.
Special purpose is designed to perform a single task.
CTRL + L
Aligns highlighted text to the left of the screen.
CTRL + R
Aligns text to right of the screen
CTRL+ E
Aligns text to the center of the screen.
CTRL + B
Bolds the highlighted text.
CTRL+F
Opens find box
CTRL + K
Inserts hyperlink
SHIFT+ Alt+T
Insert trademark
CTRL + J
Aligns text to justify screen
CTRL + M
Idents paragraph
CTRL + N
Opens new window
CTRL + U
Underline highlighted text
CTRL+O
Opens dialog box
CTRL + D
Open font preferences window
CTRL + W
Close window
CTRL + Y
CTRL +Z
Redo
Undo
CTRL + shift+ D
Double underline highlighted text
CTRL + ]
Increase selected font
CTRL+Shift+
Decrease selected font
CTRL+ left arrow
Control + right arrow
Moves one word to the left
Moves one word to the right
CTRL + home
CTRL + end
Goes to the beginning of the document
Goes to the end of the document
F1
F7
Open help
Spellcheck
Generations of comps
1st generation: year? Explain?
Disadvantages of 1st gen computers
1940-1956
Vacuum tubes used as circuitry and magnetic drums used as memory. -
- Enormous
- Used machine language which is the lowest programming language understood by a computer.
Disadvantages:They took up a lot of space.
- They generated a lot of heat which lead to malfunctions
- They could only do one task at a time.
- They were expensive to operate
2nd gen
Year and xplain
1956-1963
Vacuum tubes were replaced by transistors.
Transistors allowed computers to be faster and smaller.
The machine language was replaced by assembly languages which allowed programmer to specify instructions in words.
3rd gen- year
Xplain
1964-1971
IC- integrational circuits were the hallmark of the 3rd gen
Transistors were miniaturized and placed on silicone chips called semi-conductors
For the first time mass audience could own a computer since it was cheaper and smaller.
4th gen
Year? Xplain
1971-present
Micro-processors were introduced as a thousand ICs were placed on a single chip.
The Intel 4004 was developed and placed all the components of a computer on a one chip.
Microprocessors became more popular and people could own smaller computers.
As small computers became more powerful, it led to the development of internet.
Fifth gen
Year? Xplain?
Present- beyond
The computer devices are to use artificial intelligence and r still in development yet although some have been developed such as speech recognition and so on.
Paragraph formatting features
Alignment Idents Line spacing Shading Borders
Functions of an operating system
- Memory management
- Device management
- File management
- Processor management
- Controls system performance
- Security
Data types in MS word
- Short text (text)
- Long text (memo)
- hyperlink
- Number
- Large number
- Attachment
- Auto number
- Date/Time
