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From: marwk@levels.sait.edu.au
Newsgroups: comp.os.msdos.programmer
Subject: Should the PC CLK_TCK really be (1000/55)?
Message-ID: <15780.277225e2@levels.sait.edu.au>
Date: 21 Dec 90 15:10:26 GMT
References: <15779.2770e40e@levels.sait.edu.au>
Organization: Sth Australian Inst of Technology
Lines: 18

In article <15779.2770e40e@levels.sait.edu.au>, marwk@levels.sait.edu.au writes:
> In time.h in TURBO C 2.0 CLK_TCK is defined to be 18.2.
>
> Should I alter this depending on the speed of the processor, RAM speed
> etc., or is there a specific clock on the PC/AT/386,..., that always
> ticks away at the same speed, namely 18.2 times/second?
>
> Thank you in advance.
>
> Ray

I thank everyone for informing me that it is indeed so - there is a clock
which ticks over every 55ms, which is approximately 18.17 times per second.

If this is so, then would it be better to #define CLK_TCK to be (1000/55)?
to provide greater accuracy?

Ray