Keil MDK 4.74 Download and Installation Guide The is a legacy version of the Microcontroller Development Kit widely used for developing applications on ARM-based microcontrollers, such as the LPC1768 and Cortex-M3 series. Although Keil has moved toward Version 5 and Version 6, many educational institutions and older projects still require v4.74 for its stable $\mu$Vision4 IDE and specific device support that was bundled directly within the installer. Where to Download Keil MDK 4.74
https://www.keil.com/download/product/: Historically, an evaluation version (MDK474.EXE) was available through specific Keil demo links keil mdk 474 download