Enhanced/Dual Powered
Willem EPROM Programmer
User Guide Â
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Main Board / Cables
Main Board PCB3.5

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Main Board PCB4E

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Main Board PCB5.0

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Main Board PCB5.5C

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Parallel Data Cable (Printer extension cable, with male-female 25 pin connector, and pin to pin through) |
A-A type USB cable(for power) |
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Optional Items:
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ATMELÂ 89 Adapter |
ATMEL PLCC 44 Adapter |
TSOP 48 Adapter |
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FWH/HUB PLCC32Adapter |
PLCC32 Adapter |
SOIC Adapter(Simplified) |
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On-Board |
On-Board |
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AC or DC Power Adapter (9V or 12V, 200mA) |
SOIC Adapter(Professional) |
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: Rated for up to 11 hours , with real-world testing showing approximately 9 to 10.5 hours of continuous web surfing. Weight : Approximately 2.9 to 3.1 pounds . Shopping & Availability
The is a portable, ultra-thin 13.3-inch laptop that was highly regarded as a "best-buy" configuration during its peak market availability around 2016-2017. It is built for students and travelers, prioritizing a lightweight design and long battery life over high-end gaming performance. Key Specifications acer aspire s5 371 52jr best buy
: 6th Gen Intel Core i5-6200U (2.3GHz, up to 2.8GHz). Memory : 8GB LPDDR3 RAM. Storage : 256GB Solid State Drive (SSD). : Rated for up to 11 hours ,
: 13.3" Full HD (1920 x 1080) Widescreen IPS Anti-reflective display. It is built for students and travelers, prioritizing
While originally sold at retailers like Best Buy for roughly , this specific model is now largely out of stock or discontinued at major new-product retailers. Acer Aspire S5-371-52JR Laptop & Chromebook Review
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Hardware Installation & Configuration
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Installation Steps
         (Note: the LPT port of PC MUST set to ECP or ECP+EPP during BIOS setup. To enter the BIOS setting mode, you need press "Del" key or "F1" key during the computer selftest, which is the moment of computer just power up.)  Software Version To Use | |||
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         The software interface:  | |||
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 Hardware
Check  | |||
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 PCB3.5/PCB4E
 PCB5.0
 PCB5.5C Â
Note: the Vcc setting jumper only has effect when you are using AC adaptor as power source. For the USB power only 5V Vcc is available. For the PCB5.5C, set DIP steps: 1. press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 2. press DIP Bit shift button to shift the DIP bit position to where need to set. And then press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 3. Repeat those steps till all DIP bit ae set same as software indicated. For PCB5.5C voltage and Special chip selection: 1. Put back the safety jumper. 2. Press the voltage button and hold for 1 second, the voltage LED should move to next. Repeat till desired voltage LED light up. 3. Press the chip selection button and hold for 1 second, the chip LED should move to next. Repeat till desired LED light up. 4. Remove the safety jumper to lock the selected voltage and chip selection  DIP Switch (PCB3.5, PCB5.0)
When programming one chip, follow the program prompt to set DIP switch .  |
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: Rated for up to 11 hours , with real-world testing showing approximately 9 to 10.5 hours of continuous web surfing. Weight : Approximately 2.9 to 3.1 pounds . Shopping & Availability
The is a portable, ultra-thin 13.3-inch laptop that was highly regarded as a "best-buy" configuration during its peak market availability around 2016-2017. It is built for students and travelers, prioritizing a lightweight design and long battery life over high-end gaming performance. Key Specifications
: 6th Gen Intel Core i5-6200U (2.3GHz, up to 2.8GHz). Memory : 8GB LPDDR3 RAM. Storage : 256GB Solid State Drive (SSD).
: 13.3" Full HD (1920 x 1080) Widescreen IPS Anti-reflective display.
While originally sold at retailers like Best Buy for roughly , this specific model is now largely out of stock or discontinued at major new-product retailers. Acer Aspire S5-371-52JR Laptop & Chromebook Review