PC-1211, PC-1250, etc. TVM

[robve]

(04-01-2021 04:44 PM)Dave Britten Wrote:  Example:

N=360
I=4.75/12 (3.958333333E-01)
PV=141000
FV=0

Solve for PMT, on both machines:
PMT=-735.5227446

Then immediately solve for FV without entering anything else.

PC-1250A (Tandy PC-3):
FV=3.731560805E-05

EL-5500III:
FV=0.

I also get FV=0 with a PC-1350 with PMT=-735.5227446 when B=0 (pay at end) and with B=1 (pay at begin) I get PMT=-732.6227796 reported for DEF-V. This value is also computed with the alternative 100-105 lines.

The S-BASIC interpreter and the CPU on the EL-5500III and PC-1350 are (almost) the same, the forensics: http://www.rskey.org/~mwsebastian/miscprj/results.htm see also http://basic.hopto.org/basic/manual/basic-compare.pdf

The BASIC of the PC-1211 is an earlier S'-BASIC. The PC-1250 is derived from that early version, see: https://sharppocketcomputers.com/#basic

- Rob