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Memory Unit
Control Unit
ALU
CPU
INPUT
UNIT
OUTPUT
UNIT
Secondary
Storage Device
Examples:
Keyboard,
Mouse,
Light Pen,
Joystick etc.
1) Softcopy Devices
Ex: Monitor
2) Hardcopy Devices
3) Ex: Printer, Plotter
Examples:
Magnetic tape, Magnetic
Disks, CDs etc.
Peripheral
Devices
CPU (Central Processing Unit)
• It is the brain of the computer.
 It is often referred to as the processor.
 It is the primary component of the
computer that acts as its “control centre”.
 It contains all the circuitry needed to
process input, store data, and output
results.
 It consists of a memory unit (MU), an
arithmetic logic unit (ALU), a control unit
(CU), and various registers.
MEMORY UNIT
 The memory unit is a component of a
computer system that is used to store
data, instructions and information.
 It is also known as Principal/ Primary/
Internal memory.
 There are two types of memory
1. Read – only memory (ROM)
 It cannot be used to write.
2. Random – access memory (RAM)
 It is used for temporary storage of
program data.
Control Unit (CU)
 CU is circuitry that directs operations
within a computer’s processor.
 It interprets instructions.
 It controls data flow inside the processor.
 It receives external instructions or
commands to which it converts to
sequence of control signals.
 It controls many execution units(i.e. ALU,
data buffers and registers contained
within a CPU.
ARITHMETIC-LOGIC
UNIT(ALU)
 ALU is that part of a computer’s CPU
which performs arithmetic and logical
calculations.
 ALUs make arithmetic and logical
calculations within a computer’s CPU.
 It take binary inputs, execute the
operation, create, store and distribute
binary output.

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CPU.pptx

  • 1.
  • 2. Memory Unit Control Unit ALU CPU INPUT UNIT OUTPUT UNIT Secondary Storage Device Examples: Keyboard, Mouse, Light Pen, Joystick etc. 1) Softcopy Devices Ex: Monitor 2) Hardcopy Devices 3) Ex: Printer, Plotter Examples: Magnetic tape, Magnetic Disks, CDs etc. Peripheral Devices
  • 3. CPU (Central Processing Unit) • It is the brain of the computer.  It is often referred to as the processor.  It is the primary component of the computer that acts as its “control centre”.  It contains all the circuitry needed to process input, store data, and output results.  It consists of a memory unit (MU), an arithmetic logic unit (ALU), a control unit (CU), and various registers.
  • 4. MEMORY UNIT  The memory unit is a component of a computer system that is used to store data, instructions and information.  It is also known as Principal/ Primary/ Internal memory.  There are two types of memory 1. Read – only memory (ROM)  It cannot be used to write. 2. Random – access memory (RAM)  It is used for temporary storage of program data.
  • 5. Control Unit (CU)  CU is circuitry that directs operations within a computer’s processor.  It interprets instructions.  It controls data flow inside the processor.  It receives external instructions or commands to which it converts to sequence of control signals.  It controls many execution units(i.e. ALU, data buffers and registers contained within a CPU.
  • 6. ARITHMETIC-LOGIC UNIT(ALU)  ALU is that part of a computer’s CPU which performs arithmetic and logical calculations.  ALUs make arithmetic and logical calculations within a computer’s CPU.  It take binary inputs, execute the operation, create, store and distribute binary output.