CBSE Class 11: Computer System Organization 4

Memory Units

Memory units helps to decide the capacity and requirements of storage in Computer Systems and Organization.

• It is just like a cell; these cells are broken down into small units called bits
• Bit means a binary digit either 0 or 1
• 4 bits make up a nibble
• 8 bits make up one byte
• Every higher memory unit is equal to 210 of its lower units



Mobile System Organization

• A Mobile is a portable computer in hand
• It has a touch screen, call management system, front and rear camera, display system, memory like RAM as well as internal memory, SIM card, battery, speaker, and processor
• A processor of the mobile system has less power compared to computer systems as they are running of small batteries
• A mobile system has the following components:
• CPU handles instructions
• GPU assists the CPU to handle the visuals
• Camera ISP (Image Signal Processor) provides and handles camera functions
• Radio & 3G/4G Modem receives and transmits voice connections, 3G/4G enables the modem to send receive digital signals
• Memory the controller provides a direct link to memory
• The battery system supplies power to the mobile