The document discusses the information processing cycle which includes four main steps: (1) input - entering data using devices like keyboards, mice, and scanners; (2) processing - the CPU performs operations on the data; (3) storage - data and programs are stored on storage devices like hard drives; (4) output - processed data is output using devices like monitors, printers, and speakers. The document provides examples of input, storage, and output devices and explains their functions within the information processing cycle.

1. WHAT IS THE INFORMATION
PROCESSING CYCLE?
The sequence of events in processing information, which
includes
• (1) input
• (2) processing
• (3) output
• (4) storage

2. INFORMATION
PROCESSING CYCLE

3. 1.INPUT
-ENTERING DATA INTO THE
COMPUTER.
Typical input devices:
• Keyboards, mice, flatbed scanners, bar code readers,
joysticks, digital data tablets (for graphic drawing),
electronic cash registers

4. KEYBOARD

5. MOUSE

6. SCANNER

7. BARCODE READER

8. JOYSTICK

9. DIGITAL DATA TABLETS

10. 2.PROCESSING
-PERFORMING OPERATIONS
ON THE DATA.
• CPU Processor - Central Processing Unit
• A central processing unit (CPU), or sometimes simply processor,
is the key component in a digital computer capable of
executing a program. It interprets computer program
instructions and processes data. CPUs provide the fundamental
digital computer trait of programmability, and are one of the
necessary components found in computers of any era, along
with memory and input/output facilities. A CPU that is
manufactured as a single integrated circuit is usually known
as a microprocessor. Beginning in the mid-1970s,
microprocessors of ever-increasing complexity and power
gradually supplanted other designs, and today the term "CPU"
is usually applied to some type of microprocessor.

11. CPU

12. STORAGE
• Storage, also known as mass media or auxiliary
storage, refers to the various media on which a
computer system can store data.
• Storage devices hold programs and data in units
called files.
Hard Drive – storage

13. WHY IS STORAGE NECESSARY?
 Storage devices:
Retain data when the computer is turned off
Are cheaper than memory
Play an important role during startup
Are needed for output

14. STORAGE DEVICES

15. 3. OUTPUT
• Output devices are peripheral devices that enable us
to view or hear the computer’s processed data.
• Visual output – Text, graphics, and video
• Audio output – Sounds, music, and synthesized speech

16. OUTPUT DEVICES
• Inkjet
Laser
Printers

17. MONITORS

18. BY THE END OF THIS UNIT
LEARNERS SHOULD BE ABLE
TO:
• Learners should be able to define and identify the steps
in the information processing cycle
• Identify input, output and storage devices
• Show their own examples of the information processing
cycle using their own life experiences

19. CLASS ACTIVITY
• Access link below to follow activity
http://goo.gl/AmQ5HD