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George Boole and the AND OR NOT gates
BBC ^
| 8 December 2014
| Chris Stokel-Walker
Posted on 12/08/2014 9:59:37 AM PST by Borges
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To: Borges
Of course implementation is more directly based upon NAND / NOR gates.
41
posted on
12/08/2014 11:17:50 AM PST
by
Cvengr
(Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
To: Borges
While Boole is admirable, I’ve been much more impressed by Maurice Karnaugh (E.g. Karnaugh Maps in canonical form design). (Still alive I believe, at age 90)
42
posted on
12/08/2014 11:22:50 AM PST
by
Cvengr
(Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
To: ShadowAce
Re: Karnaugh Mapping of T/F/D (D for don’t care)
43
posted on
12/08/2014 11:24:12 AM PST
by
Cvengr
(Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
To: Yo-Yo
Your program says if its not raining, then you must die. I'm sorry about what happens when it stop raining where you are:)
To: Cvengr
45
posted on
12/08/2014 12:01:19 PM PST
by
meadsjn
To: Cvengr
I loved Karnaugh maps when I took a digital logic class. In fact I have a Karnaugh map stamp which imprints a 4x4 grid on paper. It saved me a bunch of time on my final exam.
46
posted on
12/08/2014 12:03:35 PM PST
by
Crolis
("To have a right to do a thing is not at all the same as to be right in doing it." -GKC)
To: Attention Surplus Disorder
Is there really such a thing as an exclusive NOR gate?
74266. Never used one myself.
To: Cvengr
LOL! OK. You got me on that one.
48
posted on
12/08/2014 12:08:15 PM PST
by
ShadowAce
(Linux -- The Ultimate Windows Service Pack)
To: Borges
Other notables for today and tomorrow.
Dec 08 Horace (Quintus Horatius Flaccus) born in Venosa (Italy), 65BC
Dec 08 First Ph.D. awarded by Computer Science Dept, Univ. of Penna, 1965
Dec 08 Japan enters Second World War with invasion of Pantai Sabak, Kelantan, 1941
Dec 08 Jim Morrison is born in Melbourne, Florida, 1943
Dec 08 John Lennon is shot and killed in New York City, 1980
Dec 09 Ball-bearing roller skates patented, 1884
Dec 09 The Who's "Tommy" premieres in London, 1973
49
posted on
12/08/2014 12:19:26 PM PST
by
zeugma
(The act of observing disturbs the observed.)
To: Borges
Uh, aren't all Boolean variables declared in his honor?
50
posted on
12/08/2014 12:20:25 PM PST
by
zeugma
(The act of observing disturbs the observed.)
To: zeugma
But mine was a round number. :) (Round in the sense of decimal not binary).
51
posted on
12/08/2014 1:01:52 PM PST
by
Borges
To: grania
so if you have a binary choice between
A. A very bad Republican
B. A bad DEM who may not be as bad as the GOP candidate
and it is certain that one of the 2 will win, but uncertain which one will win ... A reasonable man would:
do a write-in candidate?
vote for the Democrat?
Are we Boolean?
52
posted on
12/08/2014 3:06:34 PM PST
by
campaignPete R-CT
(Let the dead bury the dead. Let the GOP bury the GOP.)
To: campaignPete R-CT
Are we Boolean?No,..we're just F***ed.
53
posted on
12/08/2014 5:32:37 PM PST
by
Cvengr
(Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
To: Attention Surplus Disorder
I wire wrapped 74XXs in a grad school class a zillion years ago. Build a serial to parallel converter. Or was it the other way around? Can’t remember. On a PDP-8 with core memory.
54
posted on
12/09/2014 9:58:24 AM PST
by
FreedomPoster
(Islam delenda est)
To: FreedomPoster
I wire-wrap built lots of stuff, some of pretty complex, say over 100 74xx chips w/6809 8-bit uproc in the early 80’s. Tedious...but a very rugged & reliable way to build stuff.
55
posted on
12/09/2014 1:03:04 PM PST
by
Attention Surplus Disorder
(At no time was the Obama administration aware of what the Obama administration was doing)
To: Cvengr
LOL. NOT really.
56
posted on
12/09/2014 1:05:30 PM PST
by
Attention Surplus Disorder
(At no time was the Obama administration aware of what the Obama administration was doing)
To: Attention Surplus Disorder
It’s an amazingly good connection method. Lots of milspec electronics were done that way. I’m sure some of it is still flying.
57
posted on
12/09/2014 1:19:02 PM PST
by
FreedomPoster
(Islam delenda est)
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