Got gold
It's just a chip. It's silicon. It also includes other metals, mainly aluminum and copper.
IC card is an integrated circuit card, IC card chip has the ability to write data and store data, can determine the contents of the IC card memory. In the card package in line with the ISO standard chip, there are 6~8 contacts and external equipment communication, in the IC card can have color patterns and descriptive text according to the ISO standard, IC card part of the contact and its definition is: VCC: IC card working power supply; GND: ground; VPP: memory programming power supply; CLK: timing and synchronization of signals; I\/O: Input and output of serial data in the card; RST: reset signal. When the IC card is inserted into the IC card reader, the contacts are connected correspondingly, and the VLSI on the IC card begins to work.
On this issue, the gold content of IC chips varies according to its type, size, use and other factors. In general, the substrate of IC chips is silicon, and metal wires, electrodes and packaging materials contain a small amount of metal elements. According to statistics, the gold content per square centimeter of IC chips is about 0.02 milligrams (mg). However, the value of an IC chip depends not only on its gold content, but also on its function, performance, reliability and other factors.
The more sophisticated the IC gold content is higher, the low-end civil grade IC has no gold, mobile phone IC contains gold.
IC this thing, only when the package from the core chip to the pin between the wire is gold wire, the core is silicon... Sand, all kinds of pins, anyway not gold, packaging material must not be gold, then, I think the gold content of an IC is related to the number of pins and the distance from the pin to the core,
On the phone, I still think big multipoint, like the CPU and memory part.