CREATE TABLE table_204_577 (id DECIMAL, "name" TEXT, "first operational" TEXT, "numeral system" TEXT, "computing mechanism" TEXT, "programming" TEXT, "turing complete" TEXT)

what operational date is next to zuse z3 ?
SELECT "first operational" FROM table_204_577 WHERE "name" = 'zuse z3'
SELECT "first operational" FROM "table_204_577" WHERE "name" = 'zuse z3'