Computer Generations How many generations of computer? What are these

First Generation Vacuum tube based Harvard Mark I - The first modern digital computer (1942)

Second Generation Using transistor The SAGE Computer Network (about 1954)

Third Generation use of Integrated Circuits (IC's)

Apollo Guidance Computer (1968)

Forth Generation Very Large use of Integrated Circuits (IC's)

Apple I (1976)

Fifth Generation 1980-till date. Ultra Large Scale Integration

The Apple Macintosh (1984)

Dynacam - the first digital camera (1990) The first consumer digital camera. Saved a 320 x 240 pixel image, interfaced to an Apple Macintosh

Computer Hardware

Central Processing Unit (CPU) Brain of Computer IT Process all input data and provides output to hardware CPU speed measured in Gigahertz (GHz) 1 Gigahertz (GHz) = 1000,000,000 cycles per second More higher CPU speed is more higher performance

Computer Hardware Motherboard

RAM (Random Access Memory)

Computer Hardware Hard Disk Drive (HDD)

Operating System (OS)

History of Windows OS 1975–1981: Microsoft boots up-History of Windows OS

What is the First Window of Microsoft?

1985: Introducing Windows 1.0

1990-Windows Windows 3

1995: Windows 95—the PC comes of age (and don't forget the Internet)

1998: Windows 98

1999: Windows Me

2000: Windows 2000 Professional

2001–2005: Windows XP—Stable, usable, and fast

2006–2008: Windows Vista—Smart on security

2009: Windows 7 introduces Windows Touch

2012: Windows 8 features apps and tiles

2013: Windows 8.1 expands the Windows 8 vision

Bit0 or 1 the Smallest Unit 8 Bits1 Byte 1 Kilobyte (K.B)1024 Bytes 1024 Kilobyte (K.B)1 Megabyte 1024 Mega Byte1 Gigabyte 1024 Gigabyte1 Terabyte 1024 Terabyte1 Exabyte Computer Memory Measurement

Yahoo Old Days

What’s Next?

Flexible Mobiles

Transparent

Google Glasses

Google Facebook Drone