▪ Status Lights – it indicates whether
Components of Computer System the NumLock, CapsLock and
HARDWARE ScrollLock is on.
▪ Arrow Keys – these are used in
4 categories of hardware replace for moving cursor in different
directions up, down, left and right.
1. Input Hardware - these are devices used by the user to ▪ Numeric Keypad – this is used for
communicate with the processor. These are used to easier typing of numbers for
collect data and convert it to a form suitable for the calculations.
computer processing. ▪ Enter Key – this is used to move the
• Keyboard - allows typing in of letters, number insertion point to the beginning of the
or other symbols. Similar to electric typewriter next line. It is often use to send
keyboards but contain additional keys. command to the computer.
▪ Tab Key – this is used to move the
Types of Keyboard insertion point horizontally to the
▪ Enhanced Keyboard – it has 101 keys next stopping place (such as tab stop
divided into four (4) sections. The QWERTY or field in a dialog box).
section at the center; the Twelve (12)
Function Keys at the top; the Numeric Pointing Devices
Keypad at the right, and a variety of special ▪ Mouse – hand-operated pointing
keys and dedicated cursor-control keys. device
▪ Standard Keyboard – it has 84 keys divided o a device that has a ball on its
into three (3) sections. The QWERTY underside. Rolling the mouse
section which is located at the center; the across a flat surface causes a
Ten (10) Functions Keys which is located at corresponding movement of the
the left side; and the Numeric Keypad cursor of the screen.
which is located at the right side of the o Relays directional information to
keyboard. the computer
Parts of Keyboard Mouse Buttons
▪ Esc Key – it is used to exit a program ▪ The two (2) or three (3) buttons at the
or cancel a task you are performing. top of the mouse. The Left mouse
▪ Function Keys – these are used for button refers to primary mouse
special task. button used for basic actions of the
▪ Backspace Key – this is used to erase mouse while the right mouse button
any character to the left of the as secondary mouse button used for
insertion point (cursor). This is maybe displaying a shortcut menu.
use to erase selected text or drawing.
▪ Delete Key – this is used to erase any Five (5) Basic Actions of the Mouse
character to the right of the insertion ▪ Point - Means to have to move the
point (cursor). This is maybe use to screen pointer to the desired menu
erase selected text or drawing. name, command name, or an icon.
▪ Caps Lock Key – this is used if you ▪ Click - Means you have to press and
want to type in capital letters. quickly release a left mouse button
▪ Ctrl (Control) Keys – these are used in while the pointer is in the item
combination with the other keys to indicated.
send commands. ▪ Drag - Hold down the left mouse
▪ Alt (Alternate) Keys - these are used button and move the mouse. Release
in combination with the other keys to the mouse button to complete the
generate special characters and even action.
to send commands. ▪ Double – Click - Point to an item then
▪ Shift Keys – these are used if capital press and release the left mouse
letter is required or to choose symbols button twice quickly.
that appears above the top of the ▪ Triple - Click - Point to an item then
number keys. press and release the left mouse
▪ Spacebar Key – this is used to insert a button trice quickly.
blank space between words.
Components of Computer System the NumLock, CapsLock and
HARDWARE ScrollLock is on.
▪ Arrow Keys – these are used in
4 categories of hardware replace for moving cursor in different
directions up, down, left and right.
1. Input Hardware - these are devices used by the user to ▪ Numeric Keypad – this is used for
communicate with the processor. These are used to easier typing of numbers for
collect data and convert it to a form suitable for the calculations.
computer processing. ▪ Enter Key – this is used to move the
• Keyboard - allows typing in of letters, number insertion point to the beginning of the
or other symbols. Similar to electric typewriter next line. It is often use to send
keyboards but contain additional keys. command to the computer.
▪ Tab Key – this is used to move the
Types of Keyboard insertion point horizontally to the
▪ Enhanced Keyboard – it has 101 keys next stopping place (such as tab stop
divided into four (4) sections. The QWERTY or field in a dialog box).
section at the center; the Twelve (12)
Function Keys at the top; the Numeric Pointing Devices
Keypad at the right, and a variety of special ▪ Mouse – hand-operated pointing
keys and dedicated cursor-control keys. device
▪ Standard Keyboard – it has 84 keys divided o a device that has a ball on its
into three (3) sections. The QWERTY underside. Rolling the mouse
section which is located at the center; the across a flat surface causes a
Ten (10) Functions Keys which is located at corresponding movement of the
the left side; and the Numeric Keypad cursor of the screen.
which is located at the right side of the o Relays directional information to
keyboard. the computer
Parts of Keyboard Mouse Buttons
▪ Esc Key – it is used to exit a program ▪ The two (2) or three (3) buttons at the
or cancel a task you are performing. top of the mouse. The Left mouse
▪ Function Keys – these are used for button refers to primary mouse
special task. button used for basic actions of the
▪ Backspace Key – this is used to erase mouse while the right mouse button
any character to the left of the as secondary mouse button used for
insertion point (cursor). This is maybe displaying a shortcut menu.
use to erase selected text or drawing.
▪ Delete Key – this is used to erase any Five (5) Basic Actions of the Mouse
character to the right of the insertion ▪ Point - Means to have to move the
point (cursor). This is maybe use to screen pointer to the desired menu
erase selected text or drawing. name, command name, or an icon.
▪ Caps Lock Key – this is used if you ▪ Click - Means you have to press and
want to type in capital letters. quickly release a left mouse button
▪ Ctrl (Control) Keys – these are used in while the pointer is in the item
combination with the other keys to indicated.
send commands. ▪ Drag - Hold down the left mouse
▪ Alt (Alternate) Keys - these are used button and move the mouse. Release
in combination with the other keys to the mouse button to complete the
generate special characters and even action.
to send commands. ▪ Double – Click - Point to an item then
▪ Shift Keys – these are used if capital press and release the left mouse
letter is required or to choose symbols button twice quickly.
that appears above the top of the ▪ Triple - Click - Point to an item then
number keys. press and release the left mouse
▪ Spacebar Key – this is used to insert a button trice quickly.
blank space between words.
