Vintage Electronic Calculators:

Overview of Brands


INTEL_parts(E): P4001 (IC)
(Page 1/1)

Product number (P/N): P4001,
Keywords/Tags: P4001 | 4001
Date of intro: ~1971, Case: Type = Dual In Line (DIL) 16,
Classification: / Part / IC,
Featuring: Logic-technology: Integrated Circuit (IC),
Serie-members: INTEL_parts(E): C4004 (IC MicroProcessor) (Microprocessor); INTEL_parts(E): P4001 (IC) (ROM); INTEL_parts(E): P4002-1 (IC) (RAM); INTEL_parts(E): P4003 (IC) (Shift-register),
Info: Definition of Integrated Circuit (out of Agreement beween INTEL and BUSICOM):
The ROM-Chip holds 256 8-bit words of read only memory, and communicates with the Processor over the 4-bit data path.
In addition to the data path, a timing and a command signal are received by the ROM-Chip from the Processor.
During one instruction cycle, the ROM-Chip receives 12 bits of address information from the Processor via the 4-bit data path, and delivers 8-bits of information to the Processor over this path.
In addition to the read only storage, a 4 bit register is realized on the ROM-Chip chip.
This register is provided with 4 external connections and an external control lead so that it may be used as a general purpose input/output register.

Used in: BUSICOM: 141PF, BUSICOM_parts(E): QP46332 (PCB), NATIONAL CASH REGISTER (NCR): 18-36, UNICOM: 141P


Created: 06-oct-2016, Manual-update: 21-oct-2017, Batch-update: 20-may-2022             

# Pageloads since 2018: 31             

1 Pic(s),


If you have a (better) personal picture and/or missing info about any model not listed: Please do send a Mail