Apple MacBook Pro A1297 820-2390 Motherboard Schematic Circuit Diagram
Apple MacBook Pro A1297 820-2390 Motherboard Schematic Circuit Diagram
PC Processor Evolution
Since the introduction of the first personal computer in 1981, the progress of PC processors has focused on five primary areas:
- Increasing the number of transistors and their density
- Increasing the speed of the clock's cycling
- Internal registers are being expanded (bits)
- Increasing and decreasing the cache RAM size
- Increasing more cores into a single chip
In 1982, Intel released the 286 processor. It offered almost three times the performance of competing 16-bit processors at the time, with 134,000 transistors. The 286 had on-chip memory management and was software compatible with its predecessors. This ground-breaking microprocessor was originally used in IBM's benchmark PC-AT system, which is the basis for all current PCs.
The Intel 386 CPU was released in 1985. The processor could do more than five million instructions per second thanks to a revolutionary 32-bit architecture and 275,000 transistors (MIPS). The Deskpro 386 from Compaq was the first computer to use the new CPU.