Indicating equipment for decimal equivalents of binary numbers

摘要

832,670. Binary to decimal code converters. STANDARD TELEPHONES & CABLES Ltd. (Lorenz A.G., C.). June 16, 1958, No. 19173/58. Class 40 (1). An optical - indicating device adapted to convert binary values into their decimal equivalent has a number of slotted discs (such as the two shown in Fig. 3) having zones, each zone having a slot and a tooth arranged in either order, and the discs are each rotatable through a slot's width to two alternative positions, representing input binary values " 1" and "0" respectively, the arrangement being such that a passage through aligned slots appears in a position corresponding to the decimal equivalent. In the simple example of Fig. 3, the two discs are slotted as shown. In the first case a where both discs are in the " 0 " position there is a through passage in the " 0 " decimal position. In case b the top disc is in the " 1 " position and a through passage appears in the " 1 " decimal position. In case c the top disc is in the " 0 " position and the lower is in the " 1 " position so that a passage appears at decimal position " 2." In case d both discs are in the " 1 " position and the passage is in the decimal 3 position. The arrangement of slots and teeth may be in accordance with the plain binary code, as in this case, or with the cyclic permuting code. Fig. 2 shows a conversion arrangement for eight digit binary numbers, there being eight discs each movable to the left to assume the " 1 " position. A through passage appears at the corresponding decimal digit for example if the first and fourth disc are moved in slot's width to the left in response to the binary,number 00001001 a passage is made in the 9 position. As shown in Fig. 4, the discs are rotated to their " 1" positions by electromagnets acting on arms 3. Lamp 4 cooperates with a reflector to project light through the passage made by aligned slots in the discs. A scale 10 on the front bears corresponding decimal numbers.