On Mon, 20 Dec 2010 10:41:33 +0000
<alan.b.pearce@stfc.ac.uk> wrote:

> Umm, no it is rather more than 0.23 of full reading, as full scale is 0xf=
fc0 (assuming you have it left justified, which you do appear to have) whic=
h means it is around half scale, which is about the voltage you are putting=
 in.


0x3b00/(1023*64) =3D 0.23069403714565004887
0x3b00/65535 =3D 0.23047226672770275425

I think 0.23 is fair approximation. Especially if I'm using a 3 1/2
digit DVM, isn't it?

John
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