1971 – The 4004, the first 4-bit microprocessor, is introduced by Intel. It boasts 2,000 transistors with a clock speed of up to 1 MHz.

1976 – The Apple I is built.

1978 – Intel introduces a 16-bit processor, the 8086, and the 8088.

1984 – The first computer with the 80286 chip – the IBM AT – is sold. It is a 6 MHz machine with a 20 MB hard drive and a high-density 1.2 MB floppy disk drive.

1987 – MS-DOS 3.3 allows operation of 1.44 MB 3.5 inch disk drives and hard drives larger than 32 MB.

1988 – IBM introduces the PS/2 series. It does not support the hardware and software available on IBM personal computers or clones.

1992 – The Intel i586 (Pentium) processor is introduced, offering 2.5 times the performance of a 486. It contains over 3 million transistors.

1993 – MS-DOS 6.0 is released.

1994 – Intel delivers the first 100 MHz processor.

1996 – Packard Bell is the largest PC maker, beating both IBM and Compaq.

1998 – CPU speeds exceed 450 MHz and motherboard clocks reach 100 MHz. CD-ROM writers become inexpensive. USB (Universal Serial Bus) is introduced. Windows 98 becomes the standard operating system for most new personal computers.

1999 – Pentium III is released with processor speeds in excess of 500 MHz. Microsoft introduces Windows 2000. Multimedia and Internet considered standard equipment.

2002 – 1 billion PCs have been sold.

2003 – Pentium M (mobile) processor along with its Centrino chipset offers support for variable clock speeds and wireless networking.

2004 – Pentium 4 speeds reach 3 GHz.

2007 – Windows Vista is released.

Subject Input Output
|Shower |Getting rid of all the dirt and unnecessary|Feeling fresh and very relaxed. |
| |debris. | |
|Music |Artists singing into microphones. |Fantastic music I enjoy listening to. |
|Cell phones |I can communicate with people from |They can communicate from a different |
| |location. |location. |
|Gym |Getting rid of excess anger or just |Over time, different body structure and |
| |enjoying the ability to work out. |feeling amazing. |
|Banks/ATMs |Banks help manage my money with direct |ATMs help give my money back without |
| |deposit. |customer service and at my convenience. |
|Cameras |Capturing moments in the present. |Restoring those moments into visual |
| | |memories. |
|Vehicles |Taking care of its everyday needs. Gas, |Fast |
| |tune-ups, oil changes, etc. | |