... 8 bit microcomputer of NEC or Toshiba to main board c. Apply 4 bit microcomputer & LCD to remote control d. ... The precision of temperature control <=1°C e. The display is the LEDs or the double 7segments ... It can run cool,heat,fan,dehumidify,save,forcing mode i. It has timer,sleep,memory,clock,network function etc. j ... pressure protection etc. Controller for floor-stand type A.C.