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Friday, November 13, 2026Nov 13

‘Brilliant’ man who was an inventor of the calculator dies

CORRECTS AGE TO 86 INSTEAD OF 68 - This 1997 photo taken by Phyllis Merryman shows Jack Kilby and Jerry Merryman, right, at the American Computer Museum in Bozeman, Montana. Kilby, Merryman and James Van Tassel are credited with having invented the handheld calculator while working at Dallas-based Texas Instruments. Merryman died Feb. 27, 2019, at the age of 86. (Phyllis Merryman via AP)
CORRECTS AGE TO 86 INSTEAD OF 68 - This 1997 photo taken by Phyllis Merryman shows Jack Kilby and Jerry Merryman, right, at the American Computer Museum in Bozeman, Montana. Kilby, Merryman and James Van Tassel are credited with having invented the handheld calculator while working at Dallas-based Texas Instruments. Merryman died Feb. 27, 2019, at the age of 86. (Phyllis Merryman via AP) CORRECTS AGE TO 86 INSTEAD OF 68 - This 1997 photo taken by Phyllis Merryman shows Jack Kilby and Jerry Merryman, right, at the American Computer Museum in Bozeman, Montana. Kilby, Merryman and James Van Tassel are credited with having invented the handheld calculator while working at Dallas-based Texas Instruments. Merryman died Feb. 27, 2019, at the age of 86. (Phyllis Merryman via AP)

DALLAS (AP) – Jerry Merryman, one of the inventors of the hand-held electronic calculator who is described by those who knew him as not only brilliant but also kind with a good sense of humor, has died. He was 86.

Merryman died Feb. 27 at a Dallas hospital from complications of heart and kidney failure, said his stepdaughter, Kim Ikovic. She said he’d been hospitalized since late December after experiencing complications during surgery to install a pacemaker.

He’s one of the three men credited with inventing the hand-held calculator while working at Dallas-based Texas Instruments. The team was led by Jack Kilby, who made way for today’s computers with the invention of the integrated circuit and won the Nobel Prize. The prototype built by the team, which also included James Van Tassel, is at the Smithsonian Institution.

“I have a Ph.D. in material science and I’ve known hundreds of scientists, professors, Nobel prize-winners and so on. Jerry Merryman was the most brilliant man that I’ve ever met. Period. Absolutely, outstandingly brilliant,” said Vernon Porter, a former TI colleague and friend. “He had an incredible memory and he had an ability to pull up formulas, information, on almost any subject.”

Another former TI colleague and friend, Ed Millis, said, “Jerry did the circuit design on this thing in three days, and if he was ever around, he’d lean over and say, ‘and nights.'”