1. COE 205 Term - 052 Dr Abdelhafid Bouhraoua Basic Computer Organization

2. What is a Machine ? In General: Device that processes a series of raw materials into the desired product following a well-defined process Machine Process Directives Raw Material Final Product

3. Types of Machines DeviceRaw MaterialProducts Food Processing Factory Natural Fruits, Vegetables, Meats, Dairy and Spices Manufactured (Packaged) Food Products Airport Planes, Travelers, Goods Administrative Office Application FilesDecisions ComputerData

4. Computer Machine Model Machine=Computer Process =Program Directives Program=Suite of Instructions Instruction=Simple Operation

5. Basic Computer Organization (1) Need a Unit to Execute Instructions Need a Unit to Contain Programs Need a Unit to Contain Input Data Need a Unit to Contain Intermediate Stage Data Need a Unit to Input Data Need a Unit to Output Data Central Processing Unit (CPU) Memory IO

6. Cpu Memory I/O Basic Computer Organization (3) Buses: Groups of Electrical Signals or Wires That Establish The Communication Between The Different Computer System Components Buses

7. Memory 0 1 2 Similar to a set of Storage Bins Each Bin is Called: A Memory Location Each Location has a Content And an Index The Content is The Data and the Index is The Address Data is Written in Memory And Read from The MEmory The CPU Reads Data From Memory And Writes Data Into Memory Data 1 Data 2

8. Cpu I/O Address Bus Data Bus Control Bus Basic Computer Organization (3) Address Bus:Specifies the Address of the Data being Accessed Data Bus:Carries the Data to be Transferred Control Bus:Specifies the Nature of the Transfer: (Memory Read/Write or I/O) Memory