Texas Instruments TI-74S BasicCalc programmable calculator w/ memory cartridges

Description

This is a Texas Instruments TI-74S BasicCalc programmable calculator, first manufactured in 1986.
It functions as a pocket calculator and can be programmed in BASIC.
You can read the details about this unit at
https://en.wikipedia.org/wiki/TI-74
and http://www.datamath.org/Graphing/TI-74S.htm.
The calculator itself is in working condition and includes several accessories, as described below.
Please also note the section on “condition.”
Included Items
TI-74S BasicCalc programmable calculator, serial number 9200812
Plastic carrying case
User’s manual
PC-324 printer (serial number 009872 LTA0237) with4 rolls of thermal paper.
THIS DOES NOT WORK
Four plug-in memory cartridges:
Mathematics, Finance, Statistics, and 32KRAM.
Manuals for the three memory libraries
PC interface accessory, consisting of cable,manual, 3.5-inch diskette, and 5.25-inch floppy disk.
Note that the BASIC programming reference manual is NOT INCLUDED.
It is available as a PDF online at http://ftp.whtech.com/hexbus_cc40_ti74/ti-74/.
Condition
The calculator itself works fine, both as a calculator and for BASIC programming.
The display is easy to read.
As noted above, the printer does not work.
I have been unable to get it to function at all.
I have tested all the memory cartridges.
The program libraries can all be read.
I have saved and restored a memory image to the 32K RAM module.
The manuals are in good condition.
A few pages have hand-written check marks and small notes.
I have not tested the PC interface.
I do not guarantee that it works.