0
n the calculator application, each user key stroke caused thousands of CPU instructions to be executed from ROM. We wrote many subroutines which operated on 16-digit numbers stored in RAM. As an example, a 10-byte loop for digit serial addition took about 80 µs/digit.
A major change was needed for subroutine linkage. Normally, as part of a minicomputer [12] subroutine call instruction execution (PDP-8, HP 2114) the calling program's return address would be saved at the top of the subroutine in RAM. Since MCS-4 routines were in ROM (can't write into it) we could not use this method. Instead. we used, a push down stack inside the CPU for saving up to three return addresses. This was not a new idea. Stacks had been used in Burrough's computers and the IBM 1620, which Ted Hoff and his fellow had programmed -they used their experience with large scale computers. Ultimately this limited depth of four levels n thus 4004 arrived.
8008 named so because it has double the marketing of 4004(4004+4004).
Add your answer:
Earn +20 pts
What are 10 microprocessors?
Ten microprocessors are the 4004, 4040, 8008, 8080, 8085, 8086, 8088, 80286, 80386, and 80486.There are many more, and this list only included some of the Intel microprocessors, in mostly historical order.
It was the world's first commercial microprocessor?
I believe it was the 4004 by Intel, later the 8008 and then the 8080
What is the evolution of Intel computer?
It starts with the 4004 chipset (4 bit) and 8008 microprocessor (8 bit). The successor of the 4004 was the 4040, but this architecture was a dead end. The successors of the 8008 were the 8080, 8085, 8086, 8088, 80186, 80286, 80386, 80486, Pentium, etc. including the current multicore microprocessors. IBM chose to base their PC on the 8086 and 8088, then as successive newer microprocessors were developed new versions of the IBM PC used those microprocessors. Intel also produced many specialized microprocessors and microcontrollers including some RISC microprocessors (e.g. i860, i960). Current Apple Macintosh computers also use the latest Intel multicore microprocessors.
Zilog Z80 MOS 6502 Intel 8080 and MC 6809 are?
8 bit microprocessors
Why 8080 processor called so?
Intel, who developed the 8080, developed families of chips. The ancestor family of the 8080 was the 4004; part of the 4-bit MCS-4 family of chips - the 4001 being the ROM, 4002 RAM and so on and the 4004 being the CPU. The 8 bit version of the chip was named, naturally enough, 8008. The 8008 had a number of limitations; principally it's memory management was complicated and limited, these limitations were addressed in a new version which was named the 8080.
What does the number 8080 refer to?
The number 8080 refers to "Intel 8080". Intel 8080 was an 8-bit processor, which was the second processor to be created by Intel. It was available in the markets starting from April 1974.
Can you answer me about Instruction set Intel 8080?
instruction set architecture ISA for intel 8080
What technological device for computers was introduced in the 1970's?
Intel's introduction of single chip microprocessors containing the complete CPU of a computer on one monolithic integrated circuit, starting with their four bit 4004 microprocessor in 1971 followed by their eight bit 8008 microprocessor in 1972. Interestingly both of these microprocessors were originally designed as proprietary products to be sold only to the customer that requested them, while the 4004 was indeed used in the product it was designed for (a business desk calculator) the customer became dissatisfied and agreed to sign the rights back to Intel to sell the 4004 on their own, but the 8008 (and a similar chip designed by Texas Instruments at the same time) was completely rejected and the customer built his product using just standard 7400 series TTL chips so Intel was free to sell the 8008 on their own. The 8008 eventually lead to the 8080, the modern 80x86 family (including Pentium, Celeron, etc.), and the latest Duo Core, i5, i7, and other multicore Intel microprocessors.
What is the meaning of the term 8080 in microprocessor8080?
Intel 8080
What is Intel CPU?
I assume you mean an Intel Microprocessor. Intel has made many different microprocessors, starting with the 4 bit Intel 4004 in 1971 followed by the 8 bit Intel 8008 in 1972. The modern Intel Microprocessor used in PC is a 32 bit or 64 bit Microprocessor whose architecture is derived from the 8 bit Intel 8008. Some of the other Intel Microprocessor in this path of architectural evolution are the 8 bit Intel 8080, the 8 bit Intel 8085, the 16 bit Intel 8086 (and the 16 bit Intel 8088 with 8 bit external multiplexed databus), the 16 bit Intel 80186, the 16 bit Intel 80286, the 32 bit Intel 80386 (first 80x86 Microprocessor to implement virtual memory), the 32 bit Intel 80489, the 32 bit Intel Pentium (was originally to have been the 80586, but you cannot Trademark numbers only words and Intel wanted a Trademark at that time to protect their IP rights). Intel also built many other Microprocessors with unrelated architectures (e.g. 3000 series bitslice, 80432, 80860, 80960).
What is the architecture of an Intel CPU called?
Intel has actually manufactured several incompatible architectures. The 4004, 8008, and 8080 are all incompatible. The 8086, 8088, 80286, 80386, 80486, Pentium (II, III, 4), and Core (2) are all backwards-compatible processors classified as "x86." Intel also created the i860 and IA-64 (Itanium) architectures.
What is Intel first processor?
In 1974, the Intel 8080 was introduced.
