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Computer Science Summer Guide

The document discusses several common peripheral devices used with computers: 1. Printers are used to print text, documents, diagrams, pictures, and graphics. Scanners are used to digitize images and documents. 2. Keyboards and mice are used to input information and control cursor movement on screen. Joysticks can also control cursor movement and are used for gaming. 3. Other peripherals mentioned include barcode readers, webcams, and monitors which are used for tasks like video conferencing, scanning barcodes, and displaying computer output respectively. The document also provides examples of basic GW programming commands like PRINT.

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68 views5 pages

Computer Science Summer Guide

The document discusses several common peripheral devices used with computers: 1. Printers are used to print text, documents, diagrams, pictures, and graphics. Scanners are used to digitize images and documents. 2. Keyboards and mice are used to input information and control cursor movement on screen. Joysticks can also control cursor movement and are used for gaming. 3. Other peripherals mentioned include barcode readers, webcams, and monitors which are used for tasks like video conferencing, scanning barcodes, and displaying computer output respectively. The document also provides examples of basic GW programming commands like PRINT.

Uploaded by

falcon21152115
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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COMPUTER SCIENCE (SUMMER VACATION WORK)

Q.1 Peripheral devices

 PRINTER
o Purpose: To print images and document.
o Features: Resolution, Speed, Color and cache memory.
o Use: Print text, print document file, print diagram & pictures, print boo
book, print story book and print graphics & banners.
 Scanner
o Purpose: Capture images and photographic prints, posters, magazines,
pages and similar sources for computer editing and display.
o Features: It has a computer processor, a scan head and an output device.
o Use: Scan or take pictures of a document, digitize the information, display
it on your screen and store it on your connected computer.
 Keyboard
o Purpose: Putting information including letters, words and numbers into
your computer.
o Features: Letters, numerals, punctuation marks and symbols.
o Use: To type letters, numerals, punctuation marks and symbols.
 Mouse
o Purpose: To point at an object you see on the monitor.
o Features: It has a casing, sensor, a roller ball and two click buttons
o Use: To control the movement of the cursor on the computer screen.
 Joy stick
o Purpose: To control the cursor.
o Features: It includes a base and a handle that can be moved to the left or
right direction, also it can be rotated in different amounts to handle the
movement of the cursor in a computer device.
o Use: It is used to play games and move cursor on computer screen.
 Bar code reader
o Purpose: Capture and translate barcode into number and letters
o Features: A cable and an internal decoder which is attached to the
computer, using appropriate connection.
o Use: To scan and translate the barcodes.
 Web cam
o Purpose: Online meetings, conferencing and online education.
o Features: Image archiving, motion sensing, custom coding and even
automation.
o Use: For video conferencing with programs, such as ZOOM, GOOGLE
MEET, SKYPE and other applications.
 Monitors
o Purpose: To display images, text, video and graphic information
generated by the computer via a computer video card.
o Features: Color depth, color space, high dynamic range (HDR), refresh
rate and adaptive sync.
o Use: To for gaming, word processing, web browsing, data entry, business,
sending and receiving mails.

Q.2 Read GW-Basic

Q.3 (a) Word processing skills (Hands on activity)

 GW-BASIC. GW-BASIC is a dialect of the BASIC programming language


developed by Microsoft from IBM BASICA. It was bundled with MS-DOS
operating systems on IBM PC compatibles. It is a self-contained executable that
does not need the ROM BASIC. It has a large number of graphic commands and
is suitable for simple games and business programs. The initials “GW” may stand
for “Graphics and Windows” or “Gee-Whiz”.
 PRINT. PRINT CHR$(65)
 Hello. 10 PRINT "Hello, world!"
20 END

Q.3 (b) Word processing skills (Hands on activity)

Peripheral devices
 PRINTER
o Purpose: To print images and document.

o Features: Resolution, Speed, Color and cache memory.

o Use: Print text, print document file, print diagram & pictures, print

boo book, print story book and print graphics & banners.
 Scanner
o Purpose: Capture images and photographic prints, posters,
magazines, pages and similar sources for computer editing and
display.
o Features: It has a computer processor, a scan head and an
output device.
o Use: Scan or take pictures of a document, digitize the
information, display it on your screen and store it on your
connected computer.
 Keyboard
o Purpose: Putting information including letters, words and numbers into your
computer.
o Features: Letters, numerals, punctuation marks and symbols.
o Use: To type letters, numerals, punctuation marks and symbols.
TASK-1: TRADING CARDS

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