Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Programma 101 was a printing programmable calculator manufactured by Olivetti in 1965. A futuristic design for its time, the Programma 101 was priced at $3,200. About 40,000 units were sold. The Programma 101 was able to calculate the basic four arithmetic functions (addition, subtraction, multiplication, and division), plus square root, absolute value, and fractional part. Also clear, transfer, exchange, and stop for input. There were 16 jump instructions and 16 conditional jump instructions. 32 label statements were available as destinations for the 32 jump instructions and/or the four start keys (V, W, Y, Z). Each full register held a 22-digit number with sign and decimal point. Its memory consisted of 10 registers: three for operations (M, A, R); two for storage (B, C); three for storage and/or program (assignable as needed) (D, E, F); and two for program only (p1, p2).

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