Low telco on this one.
Depends on age and to a lesser extent design with Sharp, HP, and TI calculators. Older pre mid 90s most have extensive ceramic chips. That’s big plated Leads, large silver balls, etc. Yes, some of those will even make cellphone class; like the Sharp Pocket Accountant and 3000 and 5000 HPs, the 84, 86, and original ‘79 99 from TI.
Most from the late 90s-2000s are low or high telco. After 2005 all Sharp and post 2012 most TI are peripheral or low telco. I say most though. There’s always exceptions.
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