date of class
			website's post		due date (end of day)		required filename
			where assigned:
	introduction		9/3		9/10		introduction.txt
	binary math		9/8		9/13		sums.txt
	assembly language		9/17		9/22		n/a ("disassembly" automatically created)
	variation on fig. 1.4		9/23		9/29		device-io.jpg
	caching		10/2		10/9		caching.jpg
	3+2=5 in debugger		10/8		10/14		three-plus-two.zip
	wasting time		10/17		10/22		timewasters.jpg
	unpredictable order		10/22		10/27		multifork.jpg
	process scheduling		10/30		11/4		scheduling.txt
	process states		10/30		11/8		process-states.jpg
	peterson's algorithm		11/10		11/21		petersons4.c
	buddy system		11/22		11/30		buddy.jpg
	address translation		11/22		11/30		pageaddr.txt
	page replacement		12/1		12/10		pagerepl.jpg
	analyzing a filesystem		12/1		12/10		filesystem.jpg