about the project file that i downloaded from your webste
i am unable to understand how to open this all file that i downloaded from your website how to run hardware simulator when i click on it a black window of cmd runs and goes away i am presently using windows 7 bit'
Re: about the project file that i downloaded from your webste
Do you have java installed? Run "cmd" from the start menu and then type "java -version". If it says "command 'java' not found" you need to install java.
If you are running 64-bit Windows, you need to have the 32-bit java installed for Nand2Tetris. The java installer just installs the 64-bit version by default. You need to manually install the 32-bit version.
If you have Java installed and the Hardware Simulator is failing, type "HardwareSimulator.bat" on the command line and post the error message it's printing.