Hey Shuvankaryou can use | Microcontroller › 8051 › Simple automatic toll plaza using RFID › Hey Shuvankaryou can use May 1, 2015 at 5:57 am #12844 Vara AshishkumarParticipant Hey Shuvankar you can use AT89S51 instead of AT89c51.no any big difference between them but AT89S51 has advantages of In System Programming.
