itsecurityideas

The well documented history of programming languages contains some that never existed which were then invented and aptly named as a result. Ada is one of those languages; although Ada Lovelace never saw a machine that Charles Babbage never built; she did write software for it that would in theory calculate Bernouli numbers, and has since been proven to work.(Baum)i Although Ada is a retronym (a term applied after the invention’s creation); there were many languages available and used before ADA, these include ALGOL, APT, FORTRAN and many others. (Piggot)ii The logical history of software is available from the HOPL, a site devoted to the archival of all programming languages (Piggot)iii; although we could argue that the Jaquard Loom in the late eighteenth century (1890) was the first use of punch cards, and the first programming language to make use of recursion to produce fine rugs; the cards were actually pre-dated by switches when it comes to computers and programming.(Penn)iv The r...

The primary reason that physical disks are around two orders of magnitude slower than the registers and cache of a central processing unit is the simple fact that one relies on physical motion, whilst the other utilizes waves of electrons operating at speeds close to the speed of light. The only limiting factor for the speed of a wave of electrons traveling through a semi-conductor is the material and its fabrication size this is often referred to as the fabrication “Process” used. In turn the process produces the physical limitations of the solid state circuitry. The theoretical mathematical limitation is described by Taylor and Wheeler (1992)i to be 2L/c where L is the average distance to the memory and c is the maximum celerity. The primary limiting factor within a central processing unit is propagation delay as well as the distance to the physical memory. Since the next limitation is the core oscillator that acts as the CPU’s clock we see that there are no moving components...