Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751871AbXAVB4k (ORCPT ); Sun, 21 Jan 2007 20:56:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751872AbXAVB4k (ORCPT ); Sun, 21 Jan 2007 20:56:40 -0500 Received: from khc.piap.pl ([195.187.100.11]:51177 "EHLO khc.piap.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751871AbXAVB4k (ORCPT ); Sun, 21 Jan 2007 20:56:40 -0500 To: Jan Engelhardt Cc: Heikki Orsila , Bodo Eggert <7eggert@gmx.de>, Tony Foiani , Leon Woestenberg , linux-kernel@vger.kernel.org, David Schwartz Subject: Re: PROBLEM: KB->KiB, MB -> MiB, ... (IEC 60027-2) References: <7FsPf-51s-9@gated-at.bofh.it> <7FxlV-3sb-1@gated-at.bofh.it> <7FyUF-5XD-21@gated-at.bofh.it> <20070121150618.GA11613@zakalwe.fi> From: Krzysztof Halasa Date: Mon, 22 Jan 2007 02:56:37 +0100 In-Reply-To: (Jan Engelhardt's message of "Sun, 21 Jan 2007 22:27:11 +0100 (MET)") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1056 Lines: 25 Jan Engelhardt writes: > Bleh. Except for storage, base 1024 was used for almost everything > I remember. 4 MB memory meant 4096 KB, and that's still the case today. > Most likely the same for transfer rates. Nope, transfer rates were initially 1000-based: 9.6 kbps = 9600 bps, 28.8 kbps = 28800 bps, 64 kbps = 64000 bps. Then it went 128, 256, 512 kbps = 512000 bps and 1 Mbps = 2 * 512 kbps = 1024000 bps. But it's limited mostly to serial interfaces. Other networks use 10, 1000 etc. because they have nothing natural in (powers of) 2 so 1 Mbps may be 1000000 bps as well. > It's just that storage vendors broke the computer rule and went with 1000. 1024 etc. is (should be) natural to disks because the sector size is 512 B, 2048 B or something like that. -- Krzysztof Halasa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/