Sharp PC-1262

[robve]

(02-09-2022 06:47 PM)Dave Britten Wrote:  

(02-09-2022 06:30 PM)Dan C Wrote:  I have a Sharp PC-1262 soon coming in, but in the meantime i was searching the net for
a manual for it. But i seem to only find a German manual for the PC-1262.
Was the PC-1262 only sold in German speaking countries?
The PC-1262 looks really cool, with a very small body, and
a 2*24 LCD display.

I've only been able to find that same German manual, but between the built-in help feature, the information on this flyer, and manuals for other similar Sharp computers (the EL-5500III and PC-1350/PC-1360 have a similar BASIC dialect), you should be able to find enough to get up and running. And if you need a slide cover for it, look for a cheap PC-1270, since those fit the 1250 and 1260 models too.

I like the Sharp PC-1262. The PC-126x has a different version of BASIC compared to the older PC-125x, for some info see: BASIC versions. For clarification: PC-125x BASIC is supported by the newer PC-126x.

I have a PC-1260/61 manual in English. I've never seen a PC-1262 manual in English. The PC-1262 is exactly the same as the PC-1261, but with different colors. The PC-1261 manual I have was very hard to find, but it does exist!

The PC-126x also offers ESP (Easy Simulated Programming) by defining #name=expr:name=expr:name=expr:... in PRO mode and entering #name in RUN mode or just # and select an ESP program with the cursor keys and ENTER.

A couple of ESP examples I came up with (i.e. any errors in these are mine!):

Code:

' EASY SiMULATED PROGRAMMING (ESP) EXAMPLES FOR THE SHARP PC-1260 SERIES

' Convert x,y to polar radius and theta angle
#radius=√(x*x+y*y):theta=ACS(x/√(x*x+y*y))*SGN y

' Convert radius,angle to x,y
#x=radius*COS angle:y=radius*SIN angle

' Quadratic formula
#abc=b*b-4*a*c:x1=(b-√abc)/(2*a):x2=(b+√abc)/(2*a)

' Heron's formula for the area of a triangle and height from base c
#heron=(a+b+c)/2:area=√(heron*(heron-a)*(heron-b)*(heron-c)):height=2*area/c

' Sterling's Gamma approximation 5 digits
#gamma=√(2*π)*x^(x-.5)*EXP(1/12/x-x)

' erf(t) approximation with maximum relative error 0.00013
#erf=SGN t*√(1-EXP(-t*t*(4/π+.147*t*t)/(1+.147*t*t)))

Edit: I had thought about scanning the PC-1260/61 manual like I've done for others to share, but I am concerned about damaging it as it is not easy to fully hold open.

Edit 2: more accurate theta angle in polar conversion by not reusing radius.

- Rob