I checked your post 10 days ago.....You're doing a weight sensor using piezo and to transmit the weight data to another host using RF transmitter. How was it going?
Honestly, to send data through RF without using a MCU is not that easy. Your weight data after ADC is 8-10 bits in parallel form. To send them by RF you have to serialize them using a parallel to serial converter like 74HC165. There are also ACIA, UART, USART chips (6850, 6551, 8251 etc) but they need MCU or MPU to control them in order to work properly. Using the parallel to serial chip to send data through HT12E is not easy as you have synchronization problems to solve.
Unless you are sending ON and OFF states to the receiving end then it would be easier to do without mcu....
Allen