NEe Microcomputers, Inc. 4098-BIT BIPOLAR TTL PROG.
UPB406-2 - 4K-BIT BIPOLAR TTL PROGRAMMABLE READ ONLY MEMORY
UPB406-1 - 4K-BIT BIPOLAR TTL PROGRAMMABLE READ ONLY MEMORY
UPB406 - 4K-BIT BIPOLAR TTL PROGRAMMABLE READ ONLY MEMORY
UPB406C - 4K-Bit Bipolar TTL Programmable ROM
UPB406D - 4K-Bit Bipolar TTL Programmable ROM