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Heathkit Manual for the Digital Weather Computer

YEAR: 1978
ITEM: Manual/User's Guide
COMPANY: Heath Company
COUNTRY: USA
IN OUR COLLECTION: Yes

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.

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OUR DEFINITIONS OF RARITY

One of a Kind: Only known existing item.
Exceedingly Rare: Only 2 to 10 known to exist.
Very Rare: Only 11 to 25 are known to exist.
Rare: Only 26 to 50 are known to exist.
Difficult: Difficult to find.
Available:Can be commonly be purchased.
Unknown: We cannot make a determination.

(For comparison: Many people consider the Apple-1 computer to be rare. As of 2025 there are 92 confirmed and probable Apple-1 computers.)

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