Computer science uses finite math, within the subjects of this branch of mathematics, can be found Boolean algebra with its dependence on logic and its discrete values analysis of 0 and 1 or yes and no. Consequently the mathematics of 0 and 1 became the foundation of a binary system of arithmetic together with a system of logical operators comprise the mathematics of digital communications.

Digital signals utilized processing speeds approaching the vacuum speed of light. This is true in fiber optics transmissions as well as in the thin atmosphere and in outer space. Although electromagnetic waves (EM) are affected by the presence of matter particles, their speeds are much closer to lightspeed than the less efficient copper wires transmissions of ordinary electricity at a third of lightspeed. In addition, copper wires transmissions still contend with the thermal effects of electrical resistance. On the other hand, there is no such a thing as light or EM resistance unless in the cavity of a LASER of quantized energy transfers. Therefore, at the quantum levels of light particle photons and matter particles of electrons and positrons, their interactions are studied more accurately with finite mathematics. Consequently, the study of quantized spacetime using a sieve of Diophantus and its embedded Hadamard matrices also is made more effective using finite mathematics. Furthermore, discrete probability or combinatoric math is implicitly incorporated into finite math as well.