Subassemblies are groups of parts that form part of a finished assembly. Electronics, optics, and computers commonly use subassemblies. They are used in consumer electronics like microwaves, cell phones, and televisions. Computers have custom subassemblies that form the CPU and other parts. PCBs are connected by soldering and mated with other PCBs to form a specific function. The finished product is placed in a case.
A subassembly is a group of parts assembled to form part of a finished assembly. An assembly refers to a group of subassemblies put together to create something that performs a specific task. The most common areas where a subassembly will be used are electronics, optics, and computers.
Electronic subassemblies are used in a wide variety of consumer electronics. Small appliances such as microwave ovens and portable media players have subgroups. In a microwave oven, there are heating elements, electrical outlets, and the actual control panel. All three of these areas can contain smaller groups of parts or sub-assemblies.
The control panel will contain the electronic subassembly. It usually consists of a printed circuit board, or PCB, and also a light-emitting diode, or LED, display. The keyboard that controls the cooking time is also part of the electronic subgroup. These three elements are connected to each other using a soldering iron. The electronic subassembly is then coupled with the heating elements, plugs and casing to make the microwave.
Electronic devices such as cell phones or televisions also have electronic subassemblies. The display and PCB for portable media players and cell phones, while much smaller than those in a microwave oven, function in a similar way. Cell phones have additional radio frequency, or RF, components that allow them to pick up signals from cell towers. The components are then mated with the outer casing to complete the gadget.
Televisions combine both electronic subassemblies and an optical subassembly in the manufacturing process. The electronic boards house all the “brains” that allow the functioning of the television, such as the control of channels and volume. The optical subassembly manages the display, be it liquid crystal, also known as LCD, or plasma. Optical subassemblies are also part of cameras, projection equipment, and theater lighting.
Computers have custom subassemblies unique to their application. In a computer subassembly, multiple electronic subassemblies are joined together to form the central processing unit, or CPU. The CPU is the actual part of the computer that runs the machine. It contains the memory, processing and audio subassemblies which usually consist of several PCBs.
Each PCB can contain hundreds of components connected to the PCB by soldering. The PCB is then mated with other PCBs to form a computer part responsible for a specific function. Once all manufacturing is complete, the PCBs are placed into a case which forms the computer.
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