486


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486

486

The fourth generation of the Intel x86 family of CPU chips. The term may refer to the chip or to a PC that used it. Introduced in 1989, it was the successor to the 386 and the first chip in the line to include a built-in math coprocessor. Providing acceptable performance for DOS, it was bare minimum for Windows. Later versions of the chip doubled and tripled internal speeds (see DX2 and DX4). See OverDrive CPU, PC and x86.

Technical Specs
Type: 32-bit multitasking microprocessor
Transistors: 1,100,000 to 1,200,000 (1.0 micron)
Package: 168 or 169-pin PGA
Registers: 32 32-bit
Real Mode: Performs as a 16-bit 8086 CPU; addresses 1MB memory.
Protected Mode: Addresses 4GB physical and 64TB virtual memory; provides access to memory protection and 32-bit instructions.
Virtual 8086 Mode: Protected Mode subset that runs a Real Mode application in a virtual machine.


References in periodicals archive ?
1) FDA audit all foreign data submitted in support of any NDA for RU 486 as an abortifacient;
AMD said it began shipping 486 chips for PCs that run about 20 percent faster than its existing 486 models.
RU 486 should be viewed as a beginning, not an end.
Bold strategies are needed to fight for the testing and availability of RU 486, but I doubt that Lader's two proposals--developing an exact copy of RU 486 and developing a pill that works similarly to RU 486--are feasible.
The cola wars continue with advanced micro devices (AMD) and Cyrix currently challenging Intel for the 486 market while Cyrix has also targeted the 80386 market with its Cx486D[Rx.
A 486 needs a minimum of 4, but 8 Mb are recommended for a computer to run Windows at a reasonable speed.
What antiabortionists fear, of course, is that research into the use of RU 486 to treat cancer or other medical conditions would eventually promote its introduction into the United States as an abortifacient.
Porting STAR to run on 386 and 486 systems was made possible, Cuadra said, with the help of the U.
I think this article is going to irrevocably change the political landscape of RU 486 in the United States," says David A.
While the old 486 couldn't even play Solitaire, congressional hawks and White House Luddites were convinced that, if exported, it would rev up nuclear weapons plants from Beijing to Baghdad.
The document, entitled "Towards Safe and Effective Use of Medical Abortion," is the report of an international gathering of population and abortion activists, researchers, and sponsors that met January 10-13, 1998, in Bermuda to discuss the status and future of chemical abortions, most notably RU 486, which is also known by its trade name "mifepristone.
For women in developed countries, RU 486 does away with the physical and emotional pain of surgical abortion; if she takes the drug soon after a missed period, a woman will never know whether she was pregnant.