SFR Map

A map of the on-chip memory area called SFR (Special Funtion Register) space is shown in figure. Note that not all of the addresses are occupied. Unoccupied are not implemented on the chip. Read accesses to these addresses will in general return random data, and write accesses will have an indeterminate effect.
DTMF Receiver

The MT8870 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4 bit code. External component count is minimized by on […]
MCS-51 Architectural

MCU แตกต่างจาก CPU ตรงที่ตัว Microcontroller ได้รวมเอา ROM, RAM, Control port และอื่นๆ รวมเข้าด้วยกันทำให้มีขนาดที่เล็ก เหมาะกับการนำไปใช้ในวงจรควบคุมเครื่องใช้ไฟฟ้าต่างๆ
KTU Functional Test

เครื่องทดสอบในโรงงานอิเล็กทรอนิกส์ ส่วนใหญ่มักแบ่งออกเป็น 2 กลุ่ม คือกลุ่มที่ใช้ทดสอบแผงวงจรอิเล็กทรอนิกส์ กับกลุ่มที่ใช้ทดสอบ Function การทำงานของผลิตภัณฑ์เมื่อประกอบเป็น complete set แล้ว
VLAN Design table

Sample VLAN design table for a small organization: Create 4 VLAN groups, each with 62 IP Networks.
When designing an extension for restaurant kitchen

When I worked for my friend’s company (as his employee), we built a small building to rent out. However, the owner later changed his mind about renting it out and decided to turn it into a restaurant and cafe himself. However, due to the limited space, we had to expand the building by adding a […]
Design and renovate old rental rooms

I own an old apartment that I purchased from a relative. Since the building is over 30 years old, it requires ongoing renovations. As an example, I have combined two rooms into one to create more usable space for tenants. The completed renovation is shown in the attached image. The most frustrating aspect of renovation […]
Upon trying my hand at designing a coffee shop.

I once had the opportunity to work with a college friend as his employee. My friend owns a building in Mukdahan Province, which is located near the border of Laos. He had an idea to open a coffee shop and asked me to sketch out a rough design to assess its feasibility. Once the coffee […]
7 Grams Cafe & Restaurant in Mukdahan Province -00

During the morning hours at a cafe and restaurant, employees chat with each other while waiting for customers to come in.
Shop design 01

Conceptual designs of a small shop to be rented out for a food shop.