A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or man made natural fibre like Viscose, Modal & Excel is measured in terms of linear mass density, the weight of a given length of fiber.
The vernam cipher, sometimes known as the 'one time pad', is a stream cipher, which providing certain requirements are met, can be theoretically unbreakable.
Synchronous Graphics RAM (SGRAM) is a clock-synchronized DRAM that is relatively low-cost video memory. SGRAM is single-ported memory, but it can act like dual-ported memory by opening two memory pages at the same time, instead of just one. Window RAM (WRAM) is unrelated to Microsoft Windows. It is a very high-performance VRAM that is dual-ported and has approximately 25% more bandwidth than VRAM, but costs less.