Continuation of CO
1.2.5.2.1 Mouse Use Techniques
• Definition: The mouse is a pointing device used to interact with items on the screen.
• Basic Operations:
o Pointing/Selecting: Move the mouse so the pointer hovers over an icon or menu
item, then click.
o Clicking:
▪ Left Click: Select an item or open files/programs.
▪ Right Click: Opens context menus for additional options.
o Double Click: Quickly press the left button twice to open files or folders.
o Dragging and Dropping: Click and hold the left button while moving the mouse
to move objects.
o Scrolling: Use the scroll wheel to move up and down within a document or
webpage.
• Ergonomics: Use a mouse pad, keep wrist straight to avoid strain.
1.2.5.2.2 Keyboard Parts and Use Techniques
• Main Parts of Keyboard:
o Alphanumeric Keys: Letters and numbers.
o Function Keys (F1-F12): Perform specific functions depending on the program.
o Control Keys: Ctrl, Alt, Shift — used in combination with other keys.
o Navigation Keys: Arrow keys, Home, End, Page Up, Page Down.
o Numeric Keypad: On the right side, for quick number entry.
o Special Keys: Enter, Backspace, Delete, Tab, Caps Lock, Escape.
• Use Techniques:
o Touch Typing: Using all fingers without looking.
o Shortcut Keys: Combinations for quick actions (e.g., Ctrl+C for copy, Ctrl+V for
paste).
o Proper Hand Placement: Fingers on home row (ASDF for left hand, JKL; for
right hand).
o Maintaining Keyboard Cleanliness: Regular dusting and avoiding eating near
the keyboard.
1.2.5.3 Output Devices
• Definition: Devices that receive data from the computer and present it to the user.
, • Common Output Devices:
o Monitor: Displays visual output.
o Printer: Produces physical copies of documents.
▪ Types: Inkjet, Laser, Dot Matrix.
o Speakers: Output audio signals.
o Projectors: Display computer screen on larger surfaces.
o Headphones: Personal audio output.
• Usage Tips:
o Adjust monitor brightness and contrast.
o Regular maintenance of printers (replace ink/toner).
1.2.5.4 Storage Devices
• Definition: Devices used to store data permanently or temporarily.
• Types:
o Primary Storage:
▪ RAM (Random Access Memory): Temporary, volatile storage for active
programs.
o Secondary Storage:
▪ Hard Disk Drive (HDD): Magnetic storage, large capacity.
▪ Solid State Drive (SSD): Faster than HDD, no moving parts.
▪ Optical Disks: CDs, DVDs for data storage.
▪ Flash Drives/USB Drives: Portable storage, uses flash memory.
▪ External Hard Drives: For backup and additional storage.
• Usage Tips:
o Safely eject external storage devices.
o Regular backups to prevent data loss.
1.2.5.5 Computer Ports
• Definition: Physical interfaces through which external devices connect to the computer.
• Common Types of Ports:
o USB (Universal Serial Bus): For mice, keyboards, flash drives.
o HDMI (High Definition Multimedia Interface): Connects monitors, TVs.
o Ethernet Port: For wired internet connection.
o Audio Jack: For headphones and microphones.
o VGA/DVI Port: Older monitor connections.
o Power Port: For charging/power supply.
• Care Tips:
o Insert and remove plugs gently.
o Avoid dust accumulation.
1.2.5.2.1 Mouse Use Techniques
• Definition: The mouse is a pointing device used to interact with items on the screen.
• Basic Operations:
o Pointing/Selecting: Move the mouse so the pointer hovers over an icon or menu
item, then click.
o Clicking:
▪ Left Click: Select an item or open files/programs.
▪ Right Click: Opens context menus for additional options.
o Double Click: Quickly press the left button twice to open files or folders.
o Dragging and Dropping: Click and hold the left button while moving the mouse
to move objects.
o Scrolling: Use the scroll wheel to move up and down within a document or
webpage.
• Ergonomics: Use a mouse pad, keep wrist straight to avoid strain.
1.2.5.2.2 Keyboard Parts and Use Techniques
• Main Parts of Keyboard:
o Alphanumeric Keys: Letters and numbers.
o Function Keys (F1-F12): Perform specific functions depending on the program.
o Control Keys: Ctrl, Alt, Shift — used in combination with other keys.
o Navigation Keys: Arrow keys, Home, End, Page Up, Page Down.
o Numeric Keypad: On the right side, for quick number entry.
o Special Keys: Enter, Backspace, Delete, Tab, Caps Lock, Escape.
• Use Techniques:
o Touch Typing: Using all fingers without looking.
o Shortcut Keys: Combinations for quick actions (e.g., Ctrl+C for copy, Ctrl+V for
paste).
o Proper Hand Placement: Fingers on home row (ASDF for left hand, JKL; for
right hand).
o Maintaining Keyboard Cleanliness: Regular dusting and avoiding eating near
the keyboard.
1.2.5.3 Output Devices
• Definition: Devices that receive data from the computer and present it to the user.
, • Common Output Devices:
o Monitor: Displays visual output.
o Printer: Produces physical copies of documents.
▪ Types: Inkjet, Laser, Dot Matrix.
o Speakers: Output audio signals.
o Projectors: Display computer screen on larger surfaces.
o Headphones: Personal audio output.
• Usage Tips:
o Adjust monitor brightness and contrast.
o Regular maintenance of printers (replace ink/toner).
1.2.5.4 Storage Devices
• Definition: Devices used to store data permanently or temporarily.
• Types:
o Primary Storage:
▪ RAM (Random Access Memory): Temporary, volatile storage for active
programs.
o Secondary Storage:
▪ Hard Disk Drive (HDD): Magnetic storage, large capacity.
▪ Solid State Drive (SSD): Faster than HDD, no moving parts.
▪ Optical Disks: CDs, DVDs for data storage.
▪ Flash Drives/USB Drives: Portable storage, uses flash memory.
▪ External Hard Drives: For backup and additional storage.
• Usage Tips:
o Safely eject external storage devices.
o Regular backups to prevent data loss.
1.2.5.5 Computer Ports
• Definition: Physical interfaces through which external devices connect to the computer.
• Common Types of Ports:
o USB (Universal Serial Bus): For mice, keyboards, flash drives.
o HDMI (High Definition Multimedia Interface): Connects monitors, TVs.
o Ethernet Port: For wired internet connection.
o Audio Jack: For headphones and microphones.
o VGA/DVI Port: Older monitor connections.
o Power Port: For charging/power supply.
• Care Tips:
o Insert and remove plugs gently.
o Avoid dust accumulation.
