Who invented 8051 microcontroller?
John H. Wharton
The Intel MCS-51 (commonly termed 8051, typically pronounced eight-oh-five-one) is a single chip microcontroller (MCU) series developed by Intel in 1980 for use in embedded systems. The architect of the Intel MCS-51 instruction set was John H. Wharton.
What are the main feature of 8051 microcontroller?
RAM: 8051 Microcontroller has 128 Bytes of RAM which includes SFRs and Input / Output Port Registers. ROM: 8051 has 4 KB of on-chip ROM (Program Memory). I/O Ports: 8051 has four 8 – bit Input / Output Ports which are bit addressable and bidirectional. Timers / Counters: 8051 has two 16 – bit Timers / Counters.
Why the name 8051 came?
The name itself specifies its meaning by splitting the word micro-controller into two MICRO is derived from a Greek word Micros which means small (in size, quantity, number and dignity) and Controller is the logic circuitry that does the control action based on the program written.
Which is the first microcontroller?
A microcontroller was developed in 1971 by Intel Corporation in the United States. That is the 4 bit microcontroller called i4004. It was ordered by a Japanese company BUSICOM for calculators. Later, the contract was changed and it was sold as a general-purpose microcontroller with success.
How many registers are there in 8051 microcontroller?
The 8051 contains two 16-bit registers: the program counter (PC) and the data pointer (DPTR). Each is used to hold the address of a byte in memory. Program instruction bytes are fetched from locations in memory that are addressed by the PC.
How many instructions does 8051 have?
As a typical 8-bit processor, the 8051 Microcontroller instructions have 8-bit Opcodes. As a result, the 8051 Microcontroller instruction set can have up to 28 = 256 Instructions.
Is 8051 still used?
Despite the more limited features and old architecture, the 8051 is still used in some wireless communication products. The latest HC-10 Bluetooth modules are based on 8051 core. Although 16-bit or 32-bit MCUs can replace the functions offered by 8051s, the 8-bit MCU is sufficient for many product developers.
What is the name of first microcontroller?
Development. One book credits TI engineers Gary Boone and Michael Cochran with the successful creation of the first microcontroller in 1971. The result of their work was the TMS 1000, which became commercially available in 1974.