This is a user's manual on how to assemble and operate the Heathkit Model ID-4001 Digital Weather Computer. The Heathkit Model ID-4001 Digital Weather Computer is a microprocessor-based meteorological unit which measures and displays several weather variables. These variables are useful to boaters, pilots, farmers, amateur radio operators, meterologists, climatologists, and general consumers.

The Computer contains a 6-digit clock which displays time in either a 12-or 24-hour format. A 4-year calendar also uses the same six digits on alternate cycles, or you could use a rear panel switch to continuously display the time or date. An option for a plug on the CPU circuit board directly interfaces this Digital Weather Computer with other Heath Computers for the purpose of computer assisted research.