UN270021 UN27/21
UN270022 UN27S/22
UN270023 UN27/23
UN270024 UN27S/24
UN270025 UN27/25
UN270027 UN27S/27
UN270028 UN27S/28
UN270501 UN27/501
UN270502 UN27/502
32.8 secs. Power requirements +5V, !18V. Parent equipment
RD1M/1. DD 1982. DDMI 6.411(83).
Store and DAC Unit. Provides storae and audio output
channel for RD1M/1. Audio B/W 6.5kHz. Message Length 16.4
secs.
Power
requirements
+5V,
!18V.
Parent
equipment
RD1M/1. DD 1982. DDMI 6.412(83).
EPROM Store Unit. Storage card for 16 8K x 8 EPROMs
running with a 13~MHz data rate. Power requirements !5V.
4U unsupported card. DD 1982. DDHB 8.396(83).
Dual Directional Buffer Store. Allows non-bussed systems
to pass information in both directions along one 8-bit bus.
Power requirements +5V 200mA. 4U BMM unsupported printed
board with PN1/29J front panel. Parent equipment EP1M/32.
DD 1982.
General Purpose Memory Unit. Card with 16 off 28 pin
sockets which will accept any of the JEDEC standard RAM or
ROM chips on 28 or 24 pin base to make up a processor
memory. Different size chips may be mixed and the card may
be
part
of
a
paged
system.
The
bus
is
ZEUS
standard.
Power requirements 5V DC. CH1/64J. DD 1983. DDHB 2.492(83).
BBC Micro ROM Extension Unit. Allows up to 16 paged ROM's
to be fitted into the BBC Microcomputer. Single plug-in
printed board fitted inside the BBC micro case. Takes
power
from
the
BBC
micro.
Power
requirements
from BBC
Micro. ED 1983.
Store and 32 k EPROM Programmer. This equipment will store
32 kbytes of data and program 32 kbyte 27256 EPROMS under
BBC microcomputer control. 5 V at 1 A. 3U BMM unsupported
card. Parent equipment RD1SM/2. DD 1985.
Store Unit. Stores three channels of run-length encoded
symbols. Has inputs from external switch matrix to select
one of up to 16 symbols to be addressed. Power
requirements: +5 V, -5 V. 5 U unsupported pcb. Chassis
extender: CH4/11. Parent equipment: GE6SM/571. D & ED (V)
1986.
Prom Store Board providing 4096 x 2 bit words of read only
memory. Address data and control connections to edge
connector conform to Research Department Bus wiring
arrangement for microprocessor system. Memory arranged as
4 off Ultra violet erasable PROMs type 2708/8708 (each
containing 1024 x 8 bit words) plugged into sockets. Power
requirements +5V, -5V, +12V. PN1/29J. RD 1978.
Ram Store Board providing 4096 x 8 bit words of ramdom
access memory. Address data and control connections to
edge connector conform to Research Department Bus wiring
arrangement for microprocessor systems. Compatible with
PROM store board. Power requirements +5V. PN1/29J. RD
1978.
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