SMALL ELECTRONIC COMPUTER WITH COLUMN ADDING-UP FUNCTION

摘要

PURPOSE:To make data operation of a column simple and to increase freedom of adding-up by designating the first and second columns with the first and second designating means respectively and calculating a rate of the data of the column designated at the second means to the data of the column designated at the first means. CONSTITUTION:Data of respective columns from a key input part 1 of a small electronic computer are added according to the columns at a data adding part 2, flag data to the special first and second columns are added to a selection flag writing part 3 and are written in a flag area of a column memory 4. The memory part 4 is designated by an address at the first column address part 5 and the contents of the flag area are discriminated at a flag search part 6. The address of the first and second columns is set to a column memory selecting part 7 at the search part 6. The second column address designating part 8 designates the selecting part 7 for the address and adds the read address to the memory part 4 and the first and second latch parts 9 and 10. The rate of the data designated at the address parts 5 and 8 are calculated at an operation ratio operating part 11.