DATAMATH

DATAMATH CALCULATOR MUSEUM

Datamath Calculator Museum DCM-50A Playground DIL42 Adapter

Date of introduction:	July 14, 2024	Display technology:	n.a.
New price:		Display size:	n.a.
Size:	3.2" x 4.0" x 0.85" 81 x 102 x 22 mm³
Weight:	2.9 ounces, 81 grams	Serial No:	0001
Batteries:	n.a.	Date of manufacture:	mth 07 year 2024
AC-Adapter:	n.a.	Origin of manufacture:	USA
Precision:		Integrated circuits:	ZIF-42 Socket
Memories:
Program steps:		Courtesy of:	Joerg Woerner

The Datamath Calculator Museum DCM-50A (PLAYGROUND) is based on the generic DCM-50A Platform to access most features of calculators and certain features of products other than calculators that are not covered by the scope of the DCM-50A (TMS0100, TMS0800, TMS1000, TMS1200 and TMS0900) and the DCM-50A (OTHERS) category. It consists of different printed circuit boards (PCBs) that can be stacked on top of the DCM-50A Platform:

• DCM-50A (PLAYGROUND) FRAME: Plug-In Carrier to access all voltages and signals of the DCM-50A Platform
• DCM-50A (PLAYGROUND) LED DD FRAME: Plug-In Carrier to access all voltages and signals of the DCM-50A Platform for Chips with LED Direct-Drive capability
• DCM-50A (PLAYGROUND) DIL42: Daughter Board with 42-pin ZIF Socket, Patch Field, Diode Matrices, Push Buttons, SPDT Switches and Pin-Modifiers
• DCM-50A (PLAYGROUND) BB400: Daughter Board with Solderless Breadboard (400 connections), Push Buttons and SPDT Switches

To access all features of a Non-TI single-chip calculator circuit, the schematics and layout of the DCM-50A Playground DIL42 Adapter are providing accordingly:

• 42 Pin-Modifiers with 5 contacts, each: V_SS, V_DD, V_GG, Pin, Pin
• Patch Field for all DCM-50A Platform Signals provided by DCM-50A PG Frame
• 2 LEDs to signal V_DD and V_GG voltages
• 2 SPDT Switches with Center-off positions
• 2 Push Buttons with Jumpers for V_SS, V_DD and V_GG
• 2 Diode-Matrices with 4 diodes, each and Jumpers for different configurations
• 12 Diode "Wired Or" arrangement for Digit Outputs with selectable Pull-down voltage

Please notice that the DCM-50A PG DIL42 Adapter needs to be soldered on top of the DCM-50A PG Frame Carrier.

42-pin Quad In-line Packages (QIP) with their prominent staggered footprint can be used with the DCM-50A (PLAYGROUND) DIL42 but require an additional adapter:

• DCM-50A (PLAYGROUND) QIL42 / QIL42W: QIL42 for 0.9" wide 42-pin QIP and QIL42W for 0.95" wide 42-pin QIP to 0.4" wide 42-pin DIP

To further increase the flexibility of the DCM-50A Platform, an additional keyboard can be mounted on top of the original keyboard:

• DCM-50A (PLAYGROUND) KBD123: 12x3 Switch Matrix Keyboard with Patch Field for Selector Switches with Diode Matrix
• DCM-50A (PLAYGROUND) KBD102: 10x2 Switch Matrix Keyboard with BCD Encoder/Decoder

If you have additions to the above article please email: joerg@datamath.org.