several vintage chips but know nothing

Post new topic   Reply to topic    CPU-World.com forums Forum Index -> Information Requests (Collectible Chips only)
View previous topic :: View next topic  
Author Message
hugo929



Joined: 27 Oct 2006
Posts: 6163
Location: China

PostPosted: Sat May 19, 2007 11:45 pm    Post subject: several vintage chips but know nothing Reply with quote

1)
NEC 7811G564
QUIP package?
2)
D8751H
Intel 1980
3)
R5300-22
Rockwell 83
8841 2727
Mexico B2
QUIP package
4)
R5301-20
Rockwell 83
8841 2727
Mexico D2
QUIP package
5)
10462-13
Rockwell
Mexico
3),4) and 5) were soldered at a same board.
I am not sure if they are worth somthing so I just copy the marking text and leave their body at scrapper's yard.
Any idea? thanks a lot. Razz

_________________
My vintage CPU collection:www.cpumuseum.com
Chinese Forum: http://www.cpumuseum.com/forum
Back to top
View user's profile Send private message   Visit poster's website
jrmunro



Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada

PostPosted: Sat May 19, 2007 11:56 pm    Post subject: Reply with quote

The NEC 7811G is a 12 MHz MCU .
Back to top
View user's profile Send private message [ Hidden ]
hugo929



Joined: 27 Oct 2006
Posts: 6163
Location: China

PostPosted: Sun May 20, 2007 7:53 am    Post subject: Reply with quote

ok, thank you john, forget it
_________________
My vintage CPU collection:www.cpumuseum.com
Chinese Forum: http://www.cpumuseum.com/forum
Back to top
View user's profile Send private message   Visit poster's website
CPUShack



Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA

PostPosted: Sun May 20, 2007 10:34 am    Post subject: Reply with quote

8751 (2) is MCS-51 microcontroller w/ EPROM

3 4 and 5 I think are a modem chipset.

_________________
New for 2025! The CPU Shack has a co-processor!

Visit The CPU Shack of microprocessor history and information.
Back to top
View user's profile Send private message   Visit poster's website AIM Address MSN Messenger
hugo929



Joined: 27 Oct 2006
Posts: 6163
Location: China

PostPosted: Sun May 20, 2007 5:15 pm    Post subject: Reply with quote

thank you shack
_________________
My vintage CPU collection:www.cpumuseum.com
Chinese Forum: http://www.cpumuseum.com/forum
Back to top
View user's profile Send private message   Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    CPU-World.com forums Forum Index -> Information Requests (Collectible Chips only) All times are GMT - 5 Hours
Page 1 of 1
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Powered by phpBB © 2001 phpBB Group