Sinclair Scientific question

[Chris Chung]

Are there Sinclair Scientific owners here? I had created this emulator based on a software version and one of my kit builders had a question on the accuracy.

<quote>
But someting strange in happening : I put it in the sinclair mode and calculate here sin of 25 and the result wos 1,5720 Ex.00 (the same as on the on-line one, that you sended me), but the father Google said that it is - 0,1323. I know that the sinclair is well known for it´s inacuracy, but the minus seems little bit much... So, is this good resault on the sinclair ? Or I mess something more up? (I have tested the LED on different example 1-9 999 999 9 and I ensure that the LED work fine on the negative resault.)
</quote>

So I checked the web emulator and my hardware emulator and both got result of 2.4797 E -1 (google gives -0.13235... on SIN(25 radian)).

I want to know how should I make out of this (I am dumb on math).

If someone has a working Sinclair Scientific, can he / she make a run and see if my emulator is working properly?
C, 2, 5, E, 1, sin (as in ^, +)

And if they agree, what would be the impact of someone using this calculator for real work. (It was advertised as a calculator back then, not a toy)

Thanks.