Friden 1152 Circuit Board #1
Circuit board #1 in the Friden 1152 calculator contains nineteen integrated circuits all of which are DTL devices manufactured by Texas Instruments, Fairchild, or National Semiconductor. The remainder of the parts are discrete components, including four transistors, 35 diodes, 14 capacitors, and 41 resistors.
The bare circuit board is identified as Part #7018014, Revision 1. The complete assembly is identified as Part #7018015.