Apple ][ stuff

Hi. I found the following Apple ][ bits today and being the Apple neophyte that I am, I could use some information on them. Orange Micro Grappler +. How is this better than the Orange Micro Printer Interface that I got with my ][plus? I assume the quad DIP switch at the back end is to set communications parameters. Looking at the traces I'm guessing it's a serial interface. Mega-Bit RAM card. Looks pretty boring actually, but I don't see any obvious way to cable it to the motherboard RAM in the standard fashion. 16 chips, labelled 'C1516', 'C1515', or 'C1517'. No other markings on the chips. I suppose it's just standard 16k RAMs? The most interesting: a "Mockingboard Sound/Speech 1'. Looks remarkably like a DAC/speech synth. I'm guessing even stereo? It's got two DACs and a pair of LM386 chips. It's got three potentiometers across the top and a 4 pin BERG header which I'm thinking is the output stage. I want to play with this. How? Last but not least is the Apple ][ motherboard. I'm wondering which ][ it came from. I compared it to my ][plus and it looks remarkably similar with the following differences: Mystery board: Has 'APPLE II MAIN LOGIC BD RFI' silkscreened underneath the copyright and part number (820-0044-D), one bank of 300 ns Apple branded 4116 RAMs, and Apple/Microsoft ROMs. At the back of the board by the mounting holes it is marked '606-X548'. Apple ][plus: Has nothing silkscreened beneath the copyright and part number (820-0044-01 or -0I), three banks of 200 ns Apple badged 416C RAMs, and fairly generic looking ROMs that have only Apple copyrights on them. What are the differences between the Apple ][, ][plus, and //e? What I'd really like is to start a good long discussion on Apple use and lore. If somebody has the patience to start this with me, I'd appreciate it. I've got other stuff I want to know about but this'll do for now. (: Thanks. ok r.