HP HP-67

Section 14
Card Reader Operations
The programs that you have manually loaded into the HP-67 can be
preserved permanently on magnetic cards. In addition, data from the
storage registers can also be preserved on magnetic cards. By using
magnetic cards and the card reader in your HP-67 Programmable
Pocket Calculator, you can increase the capability of your machine
almost infinitely.
Magnetic Cards
The prerecorded magnetic cards and the blank cards that you received
with your HP-67 and Standard Pac are all alike—the only difference
is the information that is recorded upon them. Each card contains two
sides, or tracks, where program information or data can be recorded.
Note: Whether passing side 1 or side 2 of the card through
the card reader, always have the printed face of the card
up.
Side 1-»[ 4" P |<-Side 2
SMp__ - A » » -
Each side of the card is the same, and it does not matter which side
is used first. In this handbook, we have adopted the convention of
using side 1 first, then side 2; but as you will see, you can record
onto or load from a magnetic card in any order you choose. Each
side may contain either data or program information, but not both
at once.
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