Lambda 8300 and Dragon 32/64, are electronic devices?
Lambda 8300 The Lambda 8300 was a Sinclair ZX81 clone from Lambda Electronics Limited of Hong Kong. It was not an exact clone as it had a modified ZX81 ROM, but could be fitted with a ZX81 compatible ROM. It came with 2K RAM (expandable to 16 or 32 K), and a sound and joystick port. Specifically, it used a Z80A microprocessor at 3.25 MHz. It was identical to the DEF 3000, PC 2000, Marathon 32K, IQ 8300, PC 8300, Power 3000, Unisonic 8300, Futura 8300, Basic 2000 and Basic 3000.
Hexbus The Texas Instruments Hex-bus Interface was designed in 1982 and intended for commercial release in late 1983. It connected the console to peripherals via a high-speed serial link. Though it was prototypical to today's USB (plug and play, hot-swappable, etc.), it was never released, with only a small number of prototypes appearing in collector hands after TI pulled out of the market. Several Hex-bus peripherals were planned or produced. A WaferTape drive never made it past the prototype stage due to reliability issues with the tapes. The 5.25-inch Floppy drive also never made it past the prototype stage, even though it worked. Prototype DSDD disk controllers and Video controllers were also made. A 4-color Printer-Plotter, a 300-Baud Modem, RS-232 Interface, an 80 column thermal/ink printer, and a 2.8" "Quick Disk" drive were the only peripherals released in quantity, mostly for use with the TI CC-40. All Hex-bus peripherals could be used with a TI-99/4A when connected through the Hex-bus Interface, through direct connection to the TI-99/8, or through direct connection to the Texas Instruments Compact Computer 40.