In addition to Casio, what other calculators with load functions have you used?

吾妻思萌

In addition to Casio, what other calculators with load functions have you used? [Copy link]

 

I dug out an old Casio calculator, which is powerful and of excellent quality. I don't think there are any other brands that can compete with it?

tagetage

Among the three major graphing calculators, Texas Instruments and Casio are more commonly used. HP also has them, but less frequently.

Texas Instruments (TI) Graphical Programming Calculator

CASIO Graphical Programming Calculator

HP Graphics Programming Calculator

chunyang

What is "load function"?

chunyang

When it comes to scientific calculators, SHARP was the leader back then.

dcexpert

There are also some open source calculators that have become popular recently.

吾妻思萌

What is "load function"?

Complex function ~ not load ~

吾妻思萌

When it comes to scientific calculators, SHARP was the leader back then.

I've never heard of Sharp's screen being number one back then.

led2015

Out of date, I haven't seen these weird calculators in all these years.

eew_1PrAA0

Texas Instruments (TI) graphical programming calculator, then Casio, I don't know about the others

freebsder

Why do I need a calculator when I learn python?

秦天qintian0303

It's a scientific calculator. I used it when I was in middle school. It was used to calculate some complex trigonometric functions or secondary equations.

chunyang

Azuma Si Meng posted on 2023-5-16 17:03 I haven’t heard of Sharp’s screen No. 1 in the past~

It's normal for you to not hear about it at your age.

The first batch of Sharp scientific calculators to enter China were in the early 1970s (I remember it was 1972), which were specially distributed to the research institutes of aerospace systems. This batch of Sharp calculators used green fluorescent digital tube displays, consumed a lot of power, and had to be connected to a huge external power frequency transformer-type power adapter, so they could not be powered by batteries. After the reform and opening up, domestic universities and research institutes began to configure a large number of calculators, most of which were Sharp, which can be said to have an absolute dominant position. In particular, in the key design positions of domestic aerospace systems, a Sharp calculator with a full QAZ keyboard is configured, which supports simple BASIC programming. It is only slightly larger than a conventional scientific calculator, and is a horizontally slender strip. It is equipped with an external micro 4-pin printer. It can be said to be the top existence, almost a pocket computer. Casio only entered China in the 1980s and is very rare. There are also an even smaller number of Epson. By the mid-1980s, Sharp's ordinary calculator, the famous Sharp 838, had a very high penetration rate in domestic vegetable markets, and was considered the only "national calculator". Entering the 1990s, Sharp's calculator market share began to decline significantly. Casio's scientific calculators were faster and cheaper, so Sharp was gradually eliminated. In particular, Casio launched a large-keyboard ordinary calculator in the early 1990s to compete with Sharp 838, which was a very small pocket calculator (smaller than an adult's palm). Casio found that the calculators needed in the vegetable market were large-keyboard, large-display, and solar-powered calculators. With this innovation, Casio became the leader in the calculator field in one fell swoop, and there were countless counterfeits and imitations. This type of calculator is still the most produced type in the calculator field.

chunyang

Comparing the calculators of Sharp and Casio, it can be said that the design ideas of the two are obviously different. Sharp emphasizes function and is more affordable in terms of use cost. For example, many Sharp scientific calculators from the 1970s to the early 1980s were powered by two No. 5 batteries, so there would be an obvious "head". The whole machine was designed in a trapezoidal shape. When placed on the desktop, the display was tilted for easy viewing, and the buttons were also divided by color. Casio of the same period all used expensive button batteries for power supply. The whole machine was light and portable, and it also came with a flip-type protective leather case. The overall style was more fashionable, while Sharp's were mostly removable protective cases. Later, Sharp also followed suit and achieved the ultimate in function (the calculator mentioned in the previous post was almost a computer, powered by button batteries, and was very light and thin). However, with the popularization of computers, the use scenarios of scientific calculators shrank rapidly, and general commercial calculators became the majority of the market. The different design ideas in this field eventually led to the fall of the former king, and the second became the boss, until the calculator market was marginalized. No one knows who is the leader in the calculator market (in terms of shipments) now. The entry barrier is too low, resulting in countless players, and no one can maintain their position. In the scientific calculator market, Casio has always persisted and can be said to have no rivals, but this market has now shrunk and it can be said that it has been forgotten for a long time.

chunyang

The calculator market was once the jewel of the semiconductor industry, just like today's mobile phone processors, and even a hot spot for the semiconductor competition between the United States and Japan. The first microprocessor launched by Intel, the 4004, was a different approach to the calculator market, but it was still beaten back by Japanese manufacturers and was on the verge of bankruptcy. The reason why AMD became one of the main players in the x86 processor was that when Intel was forced into a desperate situation by Japanese manufacturers, it signed a "capitulation agreement" with AMD, permanently licensing all of its technical property rights to AMD, and even "overdrawing" for the future for twenty years. AMD then "turned the tide" and allowed Intel to survive until the personal computer boom took off, but of course this is another story. The grievances between Intel and AMD even involved old tycoons such as TI. Behind them were small calculators, which were inconspicuous but created the pattern of the semiconductor market later, and their influence continues to this day.