What is digital?Digital describes electronic technology that

generates, stores, and processes data in terms of two states: positive and non-positive.

Positive is expressed or represented by the number 1

non-positive by the number 0.

P.John Samuel / K.Nithya / K.Janani 2

What is binary?We use the decimal (base 10) number systemBinary is the base 2 number systemTen different numbers are used in base 10.

How many are used in base 2?

P.John Samuel / K.Nithya / K.Janani 3

Bits & Byteskilo, mega, and giga are different in binary!

bit (b) – binary digitByte (B) – 8 binary digitsKiloByte (KB) – 210 bytesMegaByte (MB) – 220 bytesGigaByte (GB) – 230 bytes

P.John Samuel / K.Nithya / K.Janani 4

What is Computer System?A computer system is one that is able to

take a set of inputs, process them and create a set of outputs.

P.John Samuel / K.Nithya / K.Janani 5

What is Computer System?

This is done by a combination of hardware and software.

P.John Samuel / K.Nithya / K.Janani 6

What is Software?For processing to take place, there needs

to be a set of instructions of what needs to be done. This set of instructions is called a program.

P.John Samuel / K.Nithya / K.Janani 7

What is Software?System Software Operating systemUtilitiesUser interfaceApplication software

P.John Samuel / K.Nithya / K.Janani 8

What is Hardware?

P.John Samuel / K.Nithya / K.Janani 9

What is Hardware?

P.John Samuel / K.Nithya / K.Janani 10

Processor Random Access Memory (RAM) Hard Drive / Disk

Computer Organization and DesignWhat does “organization” mean?The way H/W components operateConnected to form computer systemWhat is a computer “design”?Type of hardwareHow it is connected

P.John Samuel / K.Nithya / K.Janani 11

What is computer architecture? Computer Architecture =

Instruction Set Architecture + Computer Organization

P.John Samuel / K.Nithya / K.Janani 12

Von Neumann Architecture

P.John Samuel / K.Nithya / K.Janani 13

Harvard Architecture

P.John Samuel / K.Nithya / K.Janani 14