MINIMUM VALUE/MAXIMUM VALUE RETRIEVING APPARATUS

摘要

This invention relates to a circuit for retrieving a minimum value or a maximum value at an extremely high speed among a plurality of numerical value data. In Figure 1, one of a series of numerical value data in a memory (1) is read from a location indicated by a register (2) and is stored in registers (5, 6). The number of times of storage of the numerical value data in the register (6) is counted by a counter (9), and the content of the register (5) and the numerical value data of an exclusive register (11) are compared by a circuit (4). As a result, when the content of the register (5) is smaller (when a minimum value is obtained), the content of the register (6) and the counted value of the counter (9) are combined by an index combination circuit (10) and are stored in the exclusive register (11). Whenever this comparison operation is carried out, the content of the register (2) is incremented by (1). After readout of a series of numerical value data is finished, the numerical value data in the exclusive register (11) is the minimum value, and the address obtained by adding the leading address at the start of retrieval to the index (count value) at that time is the address on the memory (1) of the minimum value.