<> Mechanical: man or motor powered, bars cams, wheels
<> Electric: Relays, steppers, solonoids and contacts has logic tree.
<> Electronic: uses active devices, tubes, transistors, ICs some types of
<> diodes and neon filled tubes.
<
<A good definition, I could agree, althrough I've seen
<Electric and Electronic the same, since a relay isn't
<diferent from a transistor or a tube for the effekt
<(beside the current).
The distinction for the last two is significant from a design and speed
standpoint. the design process is very different at the detail level.
Allison
From: Philip.Belben(a)powertech.co.uk
Subject: Re[2]: CP/M
> Likewise the Commodore 8-bitters. In the early 1980s, I was one of the
> first in my school (I was 14 or so at the time) to own a floppy disk
> (yes, a disk, not a drive).
Gosh what memories, did you lug around a box of cassettes too??? Yeah,
disks back then were about $5.00 (US) a shot [not to be confused with
ammunition in previous off topics, though I can wield a mean VIC-20] for the
cheap SS/SD ones.
New Topic! Ok people: what sort of storage media (and for what system) did
you guys carry around to start out with?
I started with cassettes for the PETs at high school, though not as old as
some but still nostalgic. I still have my original first tape, though it had
been transfered to a new housing and snaps when a good (assertive?) datasette
rewinds it, it is still readable.
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363
Visit my Commodore 8-Bit web page at:
http://www.goldrush.com/~foxnhare/commodore.html
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
A large circulation (100,000) alternative publication in Toronto has run
several Chiapas-related articles the last couple of weeks. for the latest check
out
http://www.now.com/issues/current/News/feature2.html
They are slightly left of center and have a large influence among younger
people.
ciao Larry
lwalker(a)interlog.com
<>New Topic! Ok people: what sort of storage media (and for what system)
<>you guys carry around to start out with?
<>
8 level paper tape, boces/lirics PDP-8I timeshare system 1969
DECTAPE BOCES/LIRICS PDP-10 (tops-10) timeshare system 1970
MITS ACR casette(300baud), 1975
2400baud NRZ using audio cassette hardware (homebrew)late 1975
4800baud FM using audio cassettes early 1976
DRUM memory (real ugly four track, stored 32kb)
NS* microfloppy (5.25 sa400) late 1976
Just a few I've played with...
Allison
"Max Eskin" <maxeskin(a)hotmail.com> said:
>Do you have any diagrams of the mechanical fire control computers?
Try going to your local Federal building and look for the Goverment
Book Store. There you can find many different military training manuals.
Look for Navy manuals for Fire Control Technician 3 and 2. If you can
find it, it should have plenty of information on mechanical fire control
computers (At least they did 30 years ago).
I'm sure the Navy still uses these kind of computers on older ships with
5" guns.
=========================================
Doug Coward dcoward(a)pressstart.com
Senior Software Engineer
Press Start Inc.
Sunnyvale,CA
Curator
Museum of Personal Computing Machinery
http://www.best.com/~dcoward/museum
=========================================
On Jun 18, 21:25, Larry Anderson wrote:
> Yeah,
> disks back then were about $5.00 (US) a shot [not to be confused with
> ammunition in previous off topics, though I can wield a mean VIC-20] for
the
> cheap SS/SD ones.
I recall being one of the first at the college I worked at then, to own
floppies. I remember the price was a few pounds each around 1980, and one
local supplier sold them to students one at a time. Unfortunately (for the
dealer) not all the staff realised the price was per floppy, not per
box-of-10, and a few of us reaped the benefit of that. I still use some of
those disks in an Apple ][.
> New Topic! Ok people: what sort of storage media (and for what system)
did
> you guys carry around to start out with?
Most of my early computing was done on machines that used punched cards or
paper tape, but I didn't often get to keep the cards, and sadly I have no
cards or paper tape now. The first thing I carried about regularly was
cassette tape (CUTS format).
BTW, DECtape is 3/4" not 1" as Jim suggested (slip of the pen?). I still
have some, but alas no deck to read it on.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
At 06:30 AM 6/16/98 -0400, you wrote:
>>
>> Hello all,
>> I have found a AT&T 6310 PC box. Can anyone tell me anything about it? Is it
>> 10 years old, yet? It is heavy enough I'd thought it had a large
>>linear supply in it, but only a switcher ps! It was made in Italy by
>> Olivetti, as mentioned on the 6300 thread.
>
>Thats a 10MHZ 80286 box which was one of the last Olivetti AT&T PC's.
>
>Bill
>
Would anyone like it? Otherwise, I may find a use for it as a case or
"parts" set, as radio collectors say (I actually like to build old radios as
another hobby), as I don't have a keyboard, etc. for it. It would have to be
a pickup, as it weighs about 40 lb, (18kg)! I live in So. California,
Manhattan Beach.
-Dave
This is one for the, "You can't do squat with those dumb old computers"
file... I picked up a book at a thrift today, called, NEW HORIZONS IN
AMATEUR ASTRONOMY by Grant Fjermedal (C) 1989. Before I got out of the
first chapter I read this excellent little tidbit:
"...David Gedalia, of California's San Fernando Valley, attracted a lot
of attention by day and night with his 10-inch reflector on a
servo-controlled Dobsonian mount. This was set up near the back of his
pickup truck on the upper field, and on the tailgate of the truck was a
simple 64K Atari 800 computer running a star finding program that
Gedalia had written himself.
He had all the objects from Messier (the classic catalog of 104
prominent galaxies, nebulae, and other objects identified in the late
1700s) and several hundred other objects from the more voluminous New
General Catalog. It was so nice at night to see him enter a Messier
number, hit "Return" and listen to the purr of the servos as they
positioned the object right in the center of the eyepiece field..."
> From: mbg(a)world.std.com (Megan)
> Subject: Need help with Mac Classic
>
> My partner's classroom received a Mac Classic, donated by a parent.
> I've never done anything with Macs, so I need some help with this.
>
> - Can someone tell me the standard configuration(s) for a Mac Classic?
>
68000 processor 1 to 2 megs of RAM
> - What options are available for it?
>
You can add up to 4 megs of RAM assuming you have the extra RAM expansion card
if not you have 1 until you locate the card to plug more SIMMs in.
There are a few accellerators (such as the MicroMac) but they are not all that
much faster when you get down to serious work.
No expansion, no color... :/ It will get you crawling on the internet with
B/W Mac Web and Eudora though.
You can get printers (apple ImageWriter, Stylewriter or Stylewriter II,
anything later wouldn't work or a Parallel printer using a PowerPrint
interface), external modems, extra drives, some decent educational programs,
decent applications (I recommend Claris Works 2 or 3) etc. for it, there is
still some usefullness in it.
> - Where can I get a mouse (and other hardware) - Do I need a mouse?
> Can I get along without one?
Barely, assuming you can activate the mousekeys (if the extension is in your
system) by pressing SHIFT-COMMAND-[KEYPAD]CLEAR, then you have the keypad
numbers to move the pointer and the 5 as a mouse button. I would really
recommend a mouse, thrift stores or used computer shops are a good try at
first, if not you can find used mice available somewhat reasonably on the
internet like in
news:misc.forsale.computers.mac-specific.misc
>
> - Where can I get an operating system for it (MacOS?)
>
You can download it from the Apple site (www.apple.com) up to system 7... You
would be best to get 7.1 (no higher, it will bog down your 68000/4meg unit too
much) also available from resellers. System 7 is the minimum for somewhat
decent (read painless) internet access.
A Classic II is a much more capable machine... :/
> Any and all help appreciated...
>
Lemme know if you have any more, I still deal with them from time to time at
work (I don't think too much longer though I think most of our organization
will be color Macs and 'those other computers' soon... (=))
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363
Visit my Commodore 8-Bit web page at:
http://www.goldrush.com/~foxnhare/commodore.html
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
At 09:25 PM 6/18/98 -0700, Larry Anderson wrote:
> I started with cassettes for the PETs at high school, though not as old as
>some but still nostalgic. I still have my original first tape, though it had
>been transfered to a new housing and snaps when a good (assertive?) datasette
>rewinds it, it is still readable.
I too started with cassettes, but in my early years it was Apple II and
Commodore VIC-20/C-64/C-16 tapes. A friend of mine (the owner of the C-16)
didn't have a datasette. He's pretty artistic; he'd sit there for hours,
plotting graphics through BASIC to the screen, only to lose it all when the
power was offed. He did have a VCR though, and would record the images on
VHS tape. (I wonder what he ever did with that tape, anyway?)
-
- john higginbotham ____________________________
- webmaster www.pntprinting.com -
- limbo limbo.netpath.net -
