Procedures to install and program Digispark ATtiny85 Dev Board (Fig-1).
Figure-1:
1. Install/Include the ATTinyCore in the Arduino IDE**.** This is a software package and it is called a "core" because it forms the essential foundation for programming and interacting with microcontrollers. The Core can be installed this way:
(1) Open the Arduino IDE and on the main menu, select Files -> Preferences. In the Additional Boards Manager URLs textbox, type the URL "http://drazzy.com/package_drazzy.com_index.json", and then press the OK button.
(2) Goto Boards Manage… and type AttinyCore and then follow the menu…
2. Install the Windows USB Driver for the Board from the attached folder:
Digistump.Drivers.zip (1.6 MB)