Based on the naming convention, you are likely referring to the (often stylized as HI-TECH C51 ), which was a popular C compiler for the 8051 microcontroller family .
Note: Hi-Tech Software was acquired by Microchip Technology around 2009. The C51 toolchain has since been superseded by Microchip’s XC8 compiler (which now covers 8-bit PIC, AVR, and 8051) or other tools like SDCC. However, legacy users still search for this specific version. hi-tech c51
Here is specific content about the , broken down by use case: Option 1: Technical Description (For a blog or product spec sheet) Title: Hi-Tech C51: The Legacy Compiler that Tamed the 8051 Based on the naming convention, you are likely