controllers, and the required components for power and video hookup. Many recent plug-and-play releases have been for distributing a number of retro games for a specific console platform. Examples of these include the Atari Flashback series, the NES Classic Edition, and the Sega Genesis Mini. Components Console unit Early console hardware was designed as customized printed circuit boards (PCB)s, selecting existing integrated circuit chips that performed known functions, or programmable chips like erasable programmable read-only memory (EPROM) chips that could perform certain functions. Persistent computer memory was expensive, so dedicated consoles were generally limited to the use of processor registers for storage of the state of a game, thus limiting the complexities of such titles. Pong in both its arcade and home format had a handful of logic and calculation chips that used the current input of the players' paddles and resisters storing the ball's position to update the game's state and sent to the display device. Even with more advanced integrated circuits (IC)s of the time, designers were limited to what could be done through the electrical process rather than through programming as normally associated with video game development. Improvements in console hardware followed with improvements in microprocessor technology and semiconductor device fabrication. Manufacturing processes have been able to reduce the feature size on chips (typically measured in nanometers), allowing more transistors and other components to fit on a chip, and at the same time increasing the circuit speeds and the potential frequency the chip can run at, as well as reducing thermal dissipation. Chips were able to be made on larger dies, further increasing the number of features and effective processing power. Random-access memory became more practical with the higher density of transistors per chip, but to address the correct blocks of memory, processors needed to be updated to use larger word sizes and allot for larger bandwidth in chip communications. All these improvements did increase the cost of manufacturing but at a rate far less than the gains in overall processing power, which helped to make home computers and consoles inexpensive for the consumer, all related to Moore's law of technological improvements. For the consoles of the 1980s to 1990s, these improvements were evident in the marketing in the late 1980s to 1990s during the "bit wars", where console manufacturers had focused on their console's processor's word size as a selling point. Consoles since the 2000s are