Convert Floppy Disk (5.25", DD) (floppy (5.25" DD)) to Quadruple-Word (quad-word) instantly.
About these units
Floppy Disk (5.25", DD) (floppy (5.25" DD))
The 5.25-inch DD floppy stored roughly 360 KB (IBM PC) or 1.2 MB (Apple II and others) depending on format. These flexible disks dominated early personal computing in the 1980s. They were physically fragile but offered an affordable way to distribute software, operating systems, and games. The vast majority of early PC software—from Lotus 1-2-3 to original DOS versions—shipped on 5.25" disks. Their shape and texture became symbols of the early PC revolution, despite their low reliability, susceptibility to dust, and limited capacity.
Quadruple-Word (quad-word)
A quadruple word (quad-word) is a grouping of four standard words. On a 64-bit system, this equals 256 bits, forming the basis of advanced operations such as wide integer arithmetic, extended SIMD instructions, cryptographic keys, and high-precision floating-point values. Modern CPUs support quad-word operations through SIMD extensions like AVX and AVX-512, allowing parallel processing of large blocks of data in scientific computing, video encoding, machine learning, and physics simulations. Quad-words illustrate how data grouping evolves with hardware capability: as processors grow more powerful, software increasingly relies on larger and more complex data units.