17) The CBLOCK directive is used to allocate variables to memory a) RAM b) FLASH c) EEPROM REGISTERS 18) All Arithmetic and Logic operations use the work (W) register in the microcontroller PIC. a) True False 19) In an $085 based system, the maximum number of imput output devices can be connected using V/0 mapped IO method is a) 64 b) 128 256 d) 65536 e) None of the above 20) In order to complement the lower 4 bits ofthe accumulator, we can use ANI OFH b) XRI OFH c) ORI OFH d) CMA