The Intel 4040 microprocessor was the successor to the Intel 4004, introduced in 1974. The 4040 employed a 10 μm silicon gate enhancement-load PMOS technology, was made up of 3,000 transistors[2] and could execute approximately 62,000 instructions per second.
General performance, bus layout and arithmetic logic unit (ALU) were identical to the 4004. The main improvement was to use a larger 24-pin dual inline package, giving it 8 more pins than the 16-pin 4004. Two of these were used to implement interrupts, which were lacking in the 4004 and considered a major oversight. Two more implemented a halt/stop system, which put the processor into a low-power mode and also allowed for single-step operation that made debugging much easier. Another pin was used to bank select a second read only memory (ROM), doubling the amount of ROM the processor could address compared to the 4004.
To make use of these new pins, the instruction set was expanded, increasing it to 60 instructions from the original 46. Additionally, the internal register file and pushdown stack were expanded to support rapid interrupt processing.
The ceramic D4040 variantThe plastic P4040 variant
The Intel4040 microprocessor was the successor to the Intel 4004, introduced in 1974. The 4040 employed a 10 μm silicon gate enhancement-load PMOS technology...
4040, 40-40 or 40/40 may refer to: The year 4040 in the 5th millennium Intel4040, a microprocessor Commodore 4040, a model of floppy disk drive County...
as the Intel4040 in 1974. The Intel 8008 and 8080 were unrelated designs in spite of the similar naming. In April 1969, Busicom approached Intel to produce...
4801 – 5.185 MHz Clock Generator Crystal for 4004/4201A or 4040/4201A Introduced in 1974 by Intel Clock speed was 740 kHz (same as the 4004 microprocessor)...
instructions per second (36,000 to 80,000 at 0.8 MHz) than the 4-bit Intel 4004 and Intel4040. but since the 8008 processes data 8 bits at a time and can access...
programs that an Intel Core 2 microprocessor can, as well as programs designed for earlier microprocessors like the Intel Pentiums and Intel 80486. This contrasts...
hobbyists into complete computer systems. Intel's Intellec computers were a series of early microcomputers Intel produced starting in the 1970s as a development...
most of the logic for the finished product. The F14 CADC, Intel 4004, Intel4040, and Intel 8008 microprocessors and their support chips were PMOS. Of...
intelligent terminal, in which it was implemented in discrete IC logic. The Intel4040 microprocessor (1974) was a much improved, machine-code-compatible version...
Intellecs included the Intellec 4 for the 4004, the Intellec 4 Mod 40 for the 4040, the Intellec 8 for the 8008, and the Intellec 8 Mod 80 for the 8080. The...
engineer Masatoshi Shima. It was followed by the 4-bit Intel4040, the 8-bit Intel 8008, and the 8-bit Intel 8080. All of these processors required several external...
was one of first employees at Intel. He is best known as the designer of the Intel4040 processor. Innes also set up Intel's microprocessor design center...
chips that could sell at $20 to compete with the recently introduced Intel4040 that sold for $29 in a similar complete chipset. Chips are produced by...
business. Nutting and Frederiksen acquired a development kit for the Intel4040 microprocessor and obtained a table of Bally’s Flicker (1974) to experiment...
Holt created a prototype pinball machine called Lucky Dice based on the Intel4040 microprocessor. The machine failed to function properly and despite a...
latter never released. The 9002 had 55 instructions, patterned on the Intel4040. Most of these were a one-address format, in which case the instruction...
nibble for 4-bit entities in their documentation for the succeeding processor 4040 in 1974 already.) Worth, Don D.; Lechner, Pieter M. (May 1982) [1981]. Beneath...
nibble for 4-bit entities in their documentation for the succeeding processor 4040 in 1974 already.) Speiser, Ambrosius Paul (1965) [1961]. Digitale Rechenanlagen...
Joseph (1999). MacWorld Mac Secrets, 5th Edition. IDG Books. ISBN 0-7645-4040-8. Webster, Bruce (December 1991). "Macintosh Quadras - Power But No Pizzazz"...
1970s, including the MP944 used in the F-14 Central Air Data Computer. Intel's 4004 of 1971 is widely regarded as the first commercial microprocessor...
Most early microprocessors were manufactured in PMOS technology: 4040 and 8008 from Intel; IMP-16, PACE and SC/MP from National Semiconductor; TMS1000 from...
hardware using licensed Mac reference designs. Since Apple's switch to the Intel platform, many non-Apple Wintel/PC computers are technologically so similar...
Global Information
