Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site decwrl.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!houxz!vax135!floyd!cmcl2!seismo!hao!hplabs!sdcrdcf!sdcsvax!dcdwest!ittvax!decvax!decwrl!dec-rhea!dec-dosadi!binder From: binder@dec-dosadi.UUCP Newsgroups: net.micro Subject: Keyboards for the Apple ][" Message-ID: <1265@decwrl.UUCP> Date: Fri, 8-Jun-84 14:21:14 EDT Article-I.D.: decwrl.1265 Posted: Fri Jun 8 14:21:14 1984 Date-Received: Tue, 12-Jun-84 00:11:18 EDT Organization: DEC Engineering Network Lines: 16 In response to question by John Antypas: It is most certainly possible to apply a standard $40-$60 keyboard to an Apple. My own machine is an Apple ][+, or at least it thinks it is - I built it from Apple schematics. The keyboard is a George Risk Industries model 771. The only considerations to watch are that the keyboard must be configured for a positive-going LEVEL (not pulse) strobe, and that there is a latch of some sort for the keyboard data, either internal to the keyboard or added to the Apple. I used a 74LS373 - tie the strobe to the latch enable, and ground the output enable. It's nice, too, to make the right arrow key work properly - that takes a couple of cuts and jumpers, because most keyboards' right-arrow keys transmit acharacter (Ctrl/I) instead of the Ctrl/U that the Apple wants. It's nothing very difficult, at least it wasn't with the GRI 771, but having a schematic for the keyboard is useful.