CREATE TABLE table_14249278_1 (bits_14_12 NUMBER, description VARCHAR2)

Name the most bits 14-12 for output from accumulator to character bus
SELECT MIN(bits_14_12) FROM table_14249278_1 WHERE description = "Output from accumulator to character bus"
SELECT MIN("bits_14_12") FROM "table_14249278_1" WHERE "Output from accumulator to character bus" = "description"