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Denotes communication channel. Memory. Input. Processor. Output. Internal Storage. External Storage. Instructions. Input/output box (input/output device). Calculator (Coprocessor). Clerk (Processor). Checkbook (Output device). File cabinet (External storage). Pens/pencils
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Denotes communication channel Memory Input Processor Output Internal Storage External Storage Instructions
Input/output box (input/output device) Calculator (Coprocessor) Clerk (Processor) Checkbook (Output device) File cabinet (External storage) Pens/pencils (Input/output devices) Accounts Payable Manual (Instructions) Desk (Memory)
Monitor and printer (Output devices) Network (Communication channels) Disk drives (Storage devices) Keyboard and mouse (Input devices) Software (Instructions) CPU (Processor)
Keyboard Monitor/pen device Cash register or Point-of-sale terminal Video camera Scanning device Fax/modem Microphone Mouse
Projection Monitor Printer Fax/modem Speaker
Track Byte } Sector Disk surface Disk
Seamless connectivity Intelligent software Instant access Instantaneous processing Infinite storage