, SIM card (mobile phone card)
SIM card (Subscriber Identification Module), also known as user identification card, smart card, GSM digital mobile phone must be installed with this card to use.
The computer chip stores the information of digital mobile phone customers, encrypted keys and the user's phone book, which can be used to identify GSM network customers and encrypt the voice information when the customer calls.
2. Circuit Board
May be called printed circuit board or printed circuit board, The English name is (Printed Circuit Board) PCB, (Flexible Printed Circuit board) FPC circuit board (FPC circuit board, also known as flexible circuit board) Flexible circuit board is made of polyimide or polyester film as a substrate with high reliability, Excellent flexible printed circuit board.
It has the characteristics of high wiring density, light weight, thin thickness and good bending. and Soft and hard combination plate (reechas, soft and hard combination plate) - the birth and development of FPC and PCB, gave birth to the soft and hard combination plate this new product.
3. Cell phone batteries
The mobile phone battery is an energy storage tool that provides power for the mobile phone, which is composed of three parts: battery, protection circuit and shell. The mobile phone battery is generally used by lithium battery and nickel-metal hydride battery.
4. Central Processing Unit (CPU)
Central Processing Unit (CPU) is a large scale integrated circuit, is a computer computing core and control core, its function is mainly to interpret computer instructions and process data in computer software.
The central processing unit mainly includes an arithmetic unit, a controller and a cache, and the bus that realizes the data, control and state that are connected between them. It, together with internal memory and input\/output devices, is called the three core components of electronic computers.
5. Random Access Memory (RAM)
Random Access Memory (RAM), also known as main memory, is the internal memory that exchanges data directly with the CPU. It can be read and written at any time (except when refreshing) and is very fast, often serving as a temporary data storage medium for the operating system or other running programs. RAM can write (store) or read (take out) information from any specified address at any time.
Printed circuit boards contain the most gold. Printed circuit board, also known as printed circuit board, is an important electronic component, is the support body of electronic components, and is the carrier of electrical connection of electronic components. Printed circuit boards are often represented by \"PCB\
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? 1, sound card, also known as audio card, is the most basic component of multimedia technology, is a hardware to achieve the conversion of sound waves and digital signals, containing one percent pure gold;
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2, memory, also known as internal memory, is one of the important components of the computer, it is a bridge to communicate with the CPU, each memory treaty can be extracted 100 milligrams of gold;
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3, the central processor, is a large scale integrated circuit, is a computer computing core and control core, its function is mainly to interpret the computer instructions and process the data in the computer software, the pin contains 1% pure gold;
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4, aluminum substrate, for the mass production of fixed circuits and optimize the layout of electrical appliances play an important role, its internal pad and various types of wires contain extremely rich gold elements;
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5, the lead is a wire from the component package body to the outside, the outside lead is rich in gold.
Mobile phone electronic components have the highest gold content, three grams per ton
PCB board (gold-plated board).
2: IC (inside the binding cable).
3 Stand (gold-plated surface
The most gold content in electronic products is the CPU