TI 57 programmableModel: TI-57 programmable
Battery: BP6 , BP7
Adapter: AC9131 , AC9132
Year: 1980 Price: L.55.000 + iva 14 %
Chip: TMC1501          
Info: From an advertisement of the time! The most versatile. Because it is specialized it has 50 compact program steps. Thus it is a real programmable one which, maintaining at the same time the characteristics of a scientific one, lends itself to solving many problems with extreme flexibility. 8 addressable memories, SOA (algebraic operating system), 9 levels of parentheses, 10 labels, 2 levels of subroutines, 4 decision functions, 2 loop control functions. This is why it is the best-selling scientific-programmable in the world!