We are fortunate to have an MCS-4 Intellec 4 Intel Microcomputer
|MCS-4 Intellec 4|
|Inside the MCS-4|
|Serial number 136|
Indeed it was the Japanese company Busicom that sparked the design of the Intel 4004 for their next calculator. Busicom Story here.(from firstname.lastname@example.org ) It seems so obvious now but it was about 3 years before the microcomputer was more than a toy for hobby folks to use.
|4k RAM memory|
|4004 microprocessor chip|
The CPU card also contains 4 EPROM chips and each chip is 250 bytes or 1kbyte for the 4 white 1702A chips on the board.
Change in technology 43 years after the 4004 microprocessor
The MCS -4 memory card is only 4 kilobyte - that is the whole card. This is a good time to try and make a comparison of the 1972 technology with today. In 1964 Gordon Moore (Moore's Law) predicted integrated circuit technology would double the circuit density on a chip every 2 years. Today a memory card for a laptop computer may contain 4 Gbyte of RAM memory. It would take 1,000,000 - yes one million of the 4kilobyte RAM cards like the one in the in the Intellec 4 to have the same amount of memory as the 4 Gbyte card.
Now if you laid the 1,000,000 Intellec cards out end to end it be a string of cards 2300 miles long.
One more calculation - a common 64Gbyte USB memory stick would require a string of these Intellec cards 36,000 miles - that is circling the earth 1.5 times. The USB Memory stick cost about $35 -- these comparisons are just amazing and just give it 5 more years WOW.
The first Intel Microprocessor was the 4004 chip and a little later they came out with the 4040 microprocessor. The 4040 was still a 4 bit microprocessor but much faster in operation. The same hardware as the Intellec 4 shown in this blog was upgraded to use the 4040 - it was called the Intellec 40 Mod. Here are some photos of the 40 Mod that give you a good look at the computer hardware. The 40 Mod is basically the same except for the CPU card as the Intellec 4.
Here is a video of the Intellec 4 in our Bugbook Historical Microcomputer Museum"CLICK"
Here is a video story about the 4004 and Intellec 4 by Intel - interesting about the first commercial microprocessor "CLICK"
Please go to my Museum Page on Facebook and do a like for me. Thank You for the help.
This weekend my wife Gaynell and I are flying out to Missouri to visit my 91 year old brother.
He is doing well but we like to visit at least once per year. The Birthday party we went to in NC last weekend for our 1 year old Great grandson Tucker Helms was fun. The weather was nice most of the time but at the end of the day it did rain on our outdoor party. Weekend before we were in MD for the16th Birthday of our twin Grand daughters Natalie and Emily. Lots of travel but worth every minute. Looks like we will be home for a few weeks after this trip and looking forward to being home.
"by David Larsen" KK4WW Computer Collector/Historian