Micro-controller pins - MSP low-power microcontroller forum - MSP low-power microcontrollers - TI E2E support forums
![microcontroller - AT89S52 switched mode IO Pin 2 not setting to ground - Electrical Engineering Stack Exchange microcontroller - AT89S52 switched mode IO Pin 2 not setting to ground - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/LrmZp.jpg)
microcontroller - AT89S52 switched mode IO Pin 2 not setting to ground - Electrical Engineering Stack Exchange
![8051 I/O Port Programming using KEIL C with AT89S52 simulation on Proteus 8 and Prototyping Board – DIY Electronics Projects 8051 I/O Port Programming using KEIL C with AT89S52 simulation on Proteus 8 and Prototyping Board – DIY Electronics Projects](https://hangcafe.files.wordpress.com/2018/05/portio.png)
8051 I/O Port Programming using KEIL C with AT89S52 simulation on Proteus 8 and Prototyping Board – DIY Electronics Projects
![ISP Programming Kit for AT89S52 and AVR series Microcontroller under Repository-circuits -24876- : Next.gr ISP Programming Kit for AT89S52 and AVR series Microcontroller under Repository-circuits -24876- : Next.gr](https://www.next.gr/uploads/15/isp-programmer-circuit.jpg)