Abstract: A display and printer subsystem for use in a sorting operation with sorting apparatus in which information can be displayed and labels printed for the catagories of materials resulting from the sorting operation is disclosed. The display and printer subsystem includes a microprocessor which develops and sends address, data and external control signals over system buses, a plurality of display units, and a plurality of printer units. Each display unit includes an alphanumeric display module responsive to the application of control, enable, and data signals to write specified characters in specified display positions. Each display unit also includes a logic interface circuit adapted to receive the address signals, the display unit using the address signals to select a particular display module. Similarly, each printer unit includes a printer responsive to data signals, control signals and enable signals for printing alphanumeric data at predetermined media positions.

Abstract: An improved binary/binary coded decimal arithmetic logic unit employing soft-saturating current mode logic gates operates on pure binary data or binary coded decimal (BCD) data. The unit performs 16 binary and 2 decimal arithmetic operations and 16 Boolean operations on two 4-bit plus parity input fields. The particular operation is determined by a 5-bit mode control signal. A carry-in input CIN, duplicate carry-in input CIND, parity check PCK input, invert parity input IP, decimal mode signal D, and decimal add input DA are also provided. The device generates a binary output resultant of the operation defined by the mode control signal. In addition to the arithmetic or logic operations, the unit performs parity checking, parity carry, and parity prediction operations on 4-bit plus parity binary and BCD fields.