zx80
#ZX80
#retro computing
#home computer
#8-bit
#vintage computing
#computer interface
#microprocessor
#DIY computing
#classic computer
#hardware hacking
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Microprocessor power supply watchdog
The circuit monitors the input to the microprocessor's 5 V regulated supply for voltage drops and initiates a reset sequence before supply regulation is lost. In operation, the resistor-capacitor combination Rs and Cj forms a short time constant smoothing network...
Microprocessor triac array driver
In microprocessor control of multiple loads, minimizing the cost per load is essential. A typical application is a large display that drives arrays of incandescent lamps. This circuit achieves minimal component cost per stage by utilizing optocoupler triggering of triac...
Suitable for driving the microprocessor power supply LT1587 LT1431S
Figure (a) illustrates a microprocessor power supply circuit utilizing the LT1587-3.45. Figure (b) depicts a power supply with an adjustable output voltage constructed using the LT1585. Figure (c) showcases a computer power supply circuit formed with the LT1584 and LT1431....
HIP6302V Microprocessor CORE Voltage Regulator Multiphase Buck PWM Controller
The HIP6301V and HIP6302V control the microprocessor core voltage regulation by driving up to four synchronous-rectified buck channels in parallel. The multiphase buck converter architecture employs interleaved timing to increase ripple frequency and minimize input and output ripple currents. Reduced...
OSU8 Microprocessor Project (1994)
OSU8 began as a student project in 1994 to create a simple but functional 8-bit microprocessor, starting with a definition of the architecture to implementation in a Xilinx FPGA chip, and full-custom CMOS implementation. Over a period of about six...
Microprocessor-based home security system
A microprocessor-based home security system project. This advanced security system not only notifies the user but also alerts the police immediately. In the 8085 microprocessor-based home security system, control is exercised over a siren, telephone (via cradle and redial switches),...
Microprocessor RS-232 Reset
This circuit allows a remote microprocessor to be reset by a controlling host over a remote RS-232 or similar protocol serial line. With the use of a program loader on the remote host, a program may be downloaded and run....
8-bit bus control widely used 12-bit DA converter Universal
The 8 microcomputer data operates with an 8-bit parallel output, while also accommodating serial input for D-A converters. Typically, data must be entered in two groups and processed as a whole. The requirements for data latching involve 16 straight odd...
OSU8 Microprocessor Project (1994)
OSU8 began as a student project in 1994 to create a simple but functional 8-bit microprocessor, starting with a definition of the architecture to implementation in a Xilinx FPGA chip, and full-custom CMOS implementation. Over a period of about six...