About Visilearn

People

Visilearn CEO Chris Charuhas, a former computer instructor, taught hundreds of computer classes to thousands of students.

Before she retired from the U.S. Department of Labor, Editor Judy Blair ran its computer training department.

Visilearn authors are computer teachers. For example, the tutorials on OpenOffice.org were written by Kevin Jordan, who taught computer classes for Whitley County Schools in Indiana.

Principles

Our primary goal is to help time-pressed teachers. We want to make life easier for teachers, with tutorials that eliminate the need for long lesson plans.

We're also committed to providing tutorials at affordable prices. Textbooks cost too much, so we try to price Visilearn tutorials at around one-tenth of what publishing conglomerates charge for their texts.

History

When Visilearn began selling illustration-based computer learning materials in 2001, customers with learning disabilities told us that our materials were the only ones they could use.

We told the U.S. Department of Education about this, and some people there were intrigued. They commissioned a study on how illustration-based learning materials might help LD and ELL students.

Visilearn conducted research to find out what sort of materials worked best for students with learning disabilities and low English proficiency. Then we created a series of tutorials based on that research.

When the tutorials were tested, they made it easier for special needs students to learn computers, and also worked well for mainstream students. Now we license these tutorials to schools all over the world.

《單片機技術與應用實驗與實訓》著眼於技能型緊缺人纔的培養，從實用角度齣發，係統、全麵地介紹單片機的技術和應用及其實驗與實訓。全書共分6章，主要內容包括80C51係列單片機概述、80C51單片機I／O接口結構及工作原理、80C51的定時器/數器、80C51的中斷係統、80C51的串行接口、擴展實驗及實訓。全書堅持以就業為導嚮、以能力培養為本位原則，突齣實用性、適用性和先進性，結閤案例深入淺齣、循序漸進地引導讀者學習。

是《單片機技術與應用》的配套教材，可作為中等職業學校電氣運行與控製專業的教學用書，也可作為單片機開發維護人員的參考書。