Legacy-free PC
A legacy-free PC is a type of personal computer that lacks a floppy drive, legacy ports such as PS/2, and an Industry Standard Architecture (ISA) bus (or sometimes, any internal expansion bus at all). According to Microsoft, "The basic goal for these requirements is that the operating system, devices, and end users cannot detect the presence of the following: ISA slots or devices; legacy floppy disk controller (FDC); and PS/2, serial, parallel, and game ports."[1] The legacy ports are usually replaced with Universal Serial Bus (USB) ports. A USB adapter may be used if an older device must be connected to a PC lacking these ports.[2] According to the 2001 edition of Microsoft's PC System Design Guide, a legacy-free PC must be able to boot from a USB device.[3]
Removing older, usually bulkier ports and devices allows a legacy-free PC to be much more compact than earlier systems[4] and many fall into the nettop or all-in-one form factor. Netbooks and ultrabooks could also be considered a portable form of a legacy-free PC. Legacy-free PCs can be more difficult to upgrade than a traditional beige box PC, and are more typically expected to be replaced completely when they become obsolete.[5] Many legacy-free PCs include modern devices that may be used to replace ones omitted, such as a memory card reader replacing the floppy drive.
As the first decade of the 21st century progressed, the legacy-free PC went mainstream, with legacy ports removed from commonly available computer systems in all form factors. However, the PS/2 keyboard connector still retains some use, as it can offer some uses (e.g. implementation of n-key rollover) not offered by USB.[6]
With those parts becoming increasingly rare on newer computers as of the late 2010s and early 2020s, the term "legacy-free PC" itself has also become increasingly rare.
History[edit]
1990s[edit]
In 1998, Apple's iMac G3 was introduced as the first widely known example of a legacy-free PC,[7][8][9] and drew much criticism for its lack of legacy peripherals such as a floppy drive and Apple Desktop Bus (ADB) connector; [10] However, its success popularized USB ports.
Compaq released the iPaq desktop in 1999.
From November 1999 to July 2000, Dell's WebPC was an early less-successful Wintel legacy-free PC.
2000s[edit]
More legacy-free PCs were introduced around 2000 after the prevalence of USB and broadband internet made many of the older ports and devices obsolete.[11] They largely took the form of low-end, consumer systems[2] with the motivation of making computers less expensive, easier to use, and more stable and manageable. The Dell Studio Hybrid, Asus Eee Box and MSI Wind PC are examples of later, more-successful Intel-based legacy-free PCs.
Apple introduced the Apple Modem on October 12, 2005 and removed the internal 56K modem on new computers. The MacBook Air, introduced on January 29, 2008, also omits a built-in SuperDrive and wired Ethernet connectivity that was available on all other Mac computers sold at the time.
2010s[edit]
Northbridge, southbridge, and FSB have been replaced by more integrated architectures starting from early 2010s.
See also[edit]
References[edit]
- ^ "Microsoft.com". Microsoft.
- ^ a b Scott Mueller (2003). Upgrading and Repairing PCs. Que Publishing. p. 956. ISBN 978-0-7897-2974-3.
- ^ "What does "Legacy" mean in the world of computers?". Archived from the original on 2018-09-26. Retrieved 2011-01-04.
- ^ InfoWorld Media Group, Inc. (21 August 2000). InfoWorld: The Desktop Revolution. InfoWorld Media Group, Inc. p. 40. ISSN 0199-6649.
- ^ InfoWorld Media Group, Inc. (21 August 2000). InfoWorld: The Desktop Revolution. InfoWorld Media Group, Inc. p. 39. ISSN 0199-6649.
- ^ "PS/2 Or USB? - Five Mechanical-Switch Keyboards: Only The Best For Your Hands". 13 June 2011.
- ^ "Compaq hopes to follow the iMac". Archived from the original on 2006-10-22.
- ^ "The PC Follows iMac's Lead". Archived from the original on May 26, 2000.
- ^ Hearst Magazines (February 2001). Popular Mechanics: Making Connections. Hearst Magazines. p. 59. ISSN 0032-4558.
- ^ "Eight ways the iMac changed computing".
- ^ IDG Network World Inc (28 February 2000). Network World: New Breed of Legacy-free PCs is Easy to Love. IDG Network World Inc. p. 51. ISSN 0887-7661.