Brief computer's history (from the family album)
In our country (in Italy) the first computers of history (better defined accounting systems) are born about the year 1975. In the family business was buyed an "Olivetti's A / 5" with operating system at magnetic card, one card for every subject or client, in which were stored all the data of all accounting transactions at them assigned. The body of the computer consisted of a few very basic electronic elements, but the greatest number be mechanical rather, with elements very noisy. The language of programmation was the BAL (Basic Assembler Language), an pure machine language and some difficult.
In the early 80's was replaced the A / 5 with a computer much more complex: the System of the IBM S/34.
The IBM System/34 was an IBM midrange computer introduced in 1977. It was withdrawn from marketing in February, 1984. It was a multi-user, multi-tasking successor to the single-user System/32. Most notably, it included two very different processors, one based on System/32 and the second based on older System/3. Like the System/32 and the System/3, the System/34 was primarily programmed in the RPG II language. One of the machine's interesting features was an off-line storage mechanism that utilized "magazines" - boxes of 8-inch floppies that the machine could load and eject in a nonsequential fashion. Borrowing mainframe features such as programmable job queues and priority levels, the System/34 ran on 64K of memory.
In the mid-80's had an opportunity to change even computer systems with the IBM system ever, but much more powerful and sophisticated system S/36 Compact. The IBM System/36 (often abbreviated as S/36) was a minicomputer marketed by IBM from 1983 to 2000. It was a multi-user multi-tasking successor to the System/34. Like the System/34 and the older System/32, the System/36 was primarily programmed in the RPG IIlanguage. One of the machine's more interesting optional features was an off-line storage mechanism (on the 5360 model) that utilized "magazines" – boxes of 8-inch floppies that the machine could load and eject in a nonsequential fashion. The System/36 also had many mainframe features such as programmable job queues and scheduling priority levels.
IBM described the System/32,System/34 and System/36 as "small systems" although they were later grouped with the System/38 – and the succeeding AS/400 range – as "midrange" computers.