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Do you remember the days gone past with Windows? We thought you might enjoy a moment to rewind the clock with Microsoft.

If you have one of the older operating systems by Microsoft, you should check out the Product Lifecycle Dates. This Microsoft site provides dates for how long support will be offered on the product. Very interesting site worth looking at. The general term of support is ten years from the release date.

 

TimeLine

 

DOS 1.0  ~  1981      


DOS 1.1  ~  1982


DOS 1.25  ~  1983


DOS 2.0  ~  1984   


DOS 2.1  ~  1984


DOS 3.0  ~  1984


DOS 3.1  ~  1984


DOS 3.2  ~  1986


DOS 3.3  ~  1987


DOS 4.0  ~  1988


DOS 4.01  ~  1988


DOS 5.0  ~  1991


DOS 5.0a  ~  1992


DOS 6.0  ~  1993


DOS 6.1  ~  1993


DOS 6.2  ~  1993


DOS 6.21  ~  1994


DOS 6.22  ~  1994


DOS 7.0  ~  1994

 

Windows 1.0  ~  1985


Windows 2.0  ~  1987


Windows 286  ~  1988


Windows 386  ~  1988


Windows 3.0  ~  1990


Windows 3.1  ~  1992


Windows 3.11  ~  1992

 

Windows 95  ~  1995


Windows 95 SP1  ~  1995


Windows 95 OSR2  ~  1996


Windows 95 OSR2.1  ~  1996


Windows 95 OSR2.5  ~  1997

 

Windows 98  ~  1998


Windows 98 SE (Second Edition)  ~  1999

 

Windows 2000 Me (Millennium Edition)  ~  2000

 

Windows XP Home Edition  ~  2001


Windows XP Professional  ~  2002

 

Windows XP Media Center Edition  ~  2002


Windows XP Media Center Edition  ~  2004



Windows XP Media Center Edition  ~  2005

 

Windows Vista, was codename "Longhorn"  ~  2006

 

Windows 7, codename Vienna & Blackcomb ~ 2009? (just our guess)



There are several other products in the Windows family, however they are specialized editions for consumer electronics, like phones, pocket pc's, servers, and other computer products. They run off one of the platforms listed above and are not considered "operating systems".

I would like to mention the fact that computers did exist before Microsoft, but the consumer versions were very basic systems. They were advanced for the times and very useful. Some of the computers were: Tandy Level II-TRS-80, Commodore Basic 1.0, and the MITS Altair 8800.

 

A look back at Ram Memory Usages

This is the minimum required to operate. More ram is recommended. The future of ram will be gigabit and terabyte!

Windows 95 ~ 4mb

Windows 98 ~ 16mb

Windows 2000 Pro ~ 32mb

Windows XP Home ~ 256mb (ideal 2gb)

Windows XP Pro 32bit ~ 256mb (ideal 2gb)

Windows XP Pro 64bit ~ 256mb (ideal 2gb)

Windows Vista ~ 512mb (ideal 4gb)

Windows 7 ~ 512mb (ideal 2gb)

   *see the binary table below for a explanation of mb and gb.

 

Binary Table 

The word "byte" is a acronym from the words "binary table."

The primary specifications of hardware are rated in bytes. 40-gigabyte (40GB) disk holds 40 billion characters of data. A 512-megabyte (512MB) memory allows 512 million characters of data (character = one letter or number, a, b, c, 1, 2, 3)

b = byte = 1 character

mb = megabyte = 1,048,576 bytes

gb = gigabyte = 1024 megabytes

tb = terabyte = 1024 gigabytes

  Hope you found this REWIND useful!