HOME/ Business MONITORING SYSTEM....
Many of us have older computers stilting around that we don’t know what to do with - or at least enough leftover components to assemble a “basic” computer. And yet such computers can be used for many interesting projects. Even an older computer can be used. Even with only DOS and BASIC on your computer, the possibilities can be almost endless. (BASIC comes with almost any version of DOS, or can be found on older PCs, or on many Windows CDs. Older versions of Visual Basic can be bought fairly cheaply, and free BASIC versions can be found/downloaded).
What can you do with that old computer? How about turning your computer into a low cost home/business alarm system? One that will issue a visual and audio alarm if anyone comes in your house or business and it will tell you how many times and even the date and time, that anyone has entered and left your house, or any particular room in a building.