640K

640K

(640 Kilobytes) In the early days of PCs, 640K referred to the first 655,360 bytes of memory, known as "conventional memory." It was all the RAM that could be used for applications, although techniques were used to squirrel away drivers and other small programs into the upper memory areas. See conventional memory, PC memory and PC memory management.


All There Was in 1989
This excerpt from the January 1989 issue of PC Magazine touted the drive bays of an NEC computer costing USD $2595 with 640K of RAM.
References in periodicals archive ?
The analyst notes that some 640K - 1.6M HH patients exist in in the U.S., and given '401's superior efficacy and tolerability, its pricing may come at a premium relative to the $15K/year option for Exjade.
The DSL service level used include the 640K/ 640K designed for each ANSI/CSA loops.
Figure 4 shows the statistics of DSL service level over different loops versus the number of lines supported at 640K / 640K.
"640K ought to be enough for anybody."--Bill Gates, CEO of Microsoft
To run the program, you'll need 640K of RAM on PCs and 2MB on Macs.
The full service requires an IBM-compatible computer with 640K of available RAM and a Hewlett-Packard LaserJet (Series II or Series III) or a 100% compatible printer equipped with Center Piece Accounting & Tax Fonts.
It also provides access into the reserved region above the 640k barrier.
TSR programs are in high RAM and it's nice to have them loaded and still have close to 640k available.
Although MS-DOS computers can address up to 640 kilobytes (640K) of memory, many accountants use machines with less memory.
As application programs get larger, they bump up against the 640K memory limitation of DOS.
Capability: Expand is a library of Fortran subroutines that provide access to larger data files than MSDOS's 640K memory limit allows.
The 1720 is a 16 MHz unit with a 2400-baud modem, 20 MB hard drive and 640K memory expandable to 5 MB.