[() MADE IN SAN LEANDRO, CALIFORNIA, U.S.A. It also reads: FRIDEN CALCULATING MACHINE CO., INC. A sticker attached to the bottom reads: MODEL S. A mark on the back and sides reads: FRIDEN. An electric cord attachs to the machine at the back.Ī mark on the bottom of the machine reads: S10-105632. Decimal markers slide below the two registers on the carriage. Zeroing knobs for the registers are on the right of the carriage. The result register has plastic buttons above it that can be used to set up numbers. These are surrounded by further levers and function keys.īehind the number keys is a movable carriage with an 11-digit register and a 21-digit result register. Below it is a block of 9 white digit keys, with a 0 bar below. On the left is a register that indicates numbers entered for multiplication. On the right are two columns of function bars and keys. Metal rods between the columns of keys turn to indicate decimal places. It has a metal frame painted gray and ten columns of color-coded gray and blue-green plastic number keys, with a blank green key at the bottom of each column. This is an example of that full-keyboard non-printing electric stepped drum machine. By 1939 Friden Calculating Machine Company had introduced a “Supermatic” version of its calculating machine that featured multiplication by direct entry of digits (rather than repeated addition).
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