From owner-freebsd-questions Fri Aug 25 3:32:33 2000 Delivered-To: freebsd-questions@freebsd.org Received: from backup.af.speednet.com.au (af.speednet.com.au [202.135.188.244]) by hub.freebsd.org (Postfix) with ESMTP id E570637B440 for ; Fri, 25 Aug 2000 03:32:26 -0700 (PDT) Received: from backup.af.speednet.com.au (andyf@backup.af.speednet.com.au [172.22.2.4]) by backup.af.speednet.com.au (8.9.3/8.9.3) with ESMTP id UAA17501; Fri, 25 Aug 2000 20:32:08 +1000 (EST) (envelope-from andyf@speednet.com.au) Date: Fri, 25 Aug 2000 20:32:08 +1000 (EST) From: Andy Farkas X-Sender: andyf@backup.af.speednet.com.au To: Lyntal@aol.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: bitmap? In-Reply-To: <40.866cd.26d65d8f@aol.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 24 Aug 2000 Lyntal@aol.com wrote: > What would be the easiest way to explain the idea of bitmap to my middle > school computer students? > thanks > Lynn A museum I went to had a display explaining "resolution". They had 3 same-sized squares with cylinders in them arranged in a square array. The first one had few large cylinders, the last many small. sort of like: +---------+ +---------+ +---------+ | O O O | | o o o o | | ....... | | O O O | | o o o o | | ....... | | O O O | | o o o o | | ....... | | O O O | | o o o o | | ....... | +---------+ +---------+ +---------+ These boxes were about 30x30cm with the first one having about 10x10 cylinders, the last one about 100x100, the idea being to put your hand on it and make a depression, then view the representation (the high-res one being the clearest). Same as those novelty toys where you make a depression in a metalic surface of blunt pins... I'm having trouble explaining it... Perhaps you could explain to them that the boxes above can be represented as a bitmap to store an image using the above concept... if I've explained it any good. -- :{ andyf@speednet.com.au Andy Farkas System Administrator Speednet Communications http://www.speednet.com.au/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message