| Description | A fully integrated 4-bit “microcomputer” seen in Sharp PC-1200 series pocket BASIC computers and EL5100(S) programmable calculators. |
|---|---|
| Device Family | Sharp SM-4 Family, probably an SM578/579 predecessor |
| Date Code | circa. 1980 |
| Size | 5.55 mm x 5.0 mm |
| Feature Size | ~5μm |
| Technology | 1P1M Poly Gate CMOS |
| Description | Also known as the "ACT" (arithemetic-control-timing). It's HP’s single-chip version of their first-generation handheld scientific calculator chipset. In essence it's a programmed Cordic machine with additional registers for RPN operation with fully dynamic data storage (Shift register based DRAM). |
|---|---|
| Device Family | HP ACT for the “Woodstock” Calculator Series |
| Date Code | 1975.38 |
| Size | 5.0 mm x 5.0 mm |
| Feature Size | ~7μm |
| Technology | 1P1M Metal Contact Poly Gate PMOS |
| Description | Also known as the "CTC" (control-timing chip). It contains half the logic of HP's first generation handheld calculators 1. ROM address register & Return stack (typically 1 level) 2. Status bits & Carry / Jump flag 3. Logic to translate keypresses into ROM address 4. P register & Field select logic for arithmetic operations 5. Model specific ops The second half (HP ARC) can be found here: pmonta.com |
|---|---|
| Device Family | HP CTC for the classical HP calculators |
| Date Code | 1975.11 |
| Size | - |
| Feature Size | - |
| Technology | 1P1M Metal Contact Poly Gate PMOS |
| Description | A 256 x 4-bit low power SRAM with LCD drivers seen in Sharp PC-1200 series pocket BASIC computers and EL5100(S) programmable calculators. |
|---|---|
| Device Family | ? |
| Date Code | circa. 1980 |
| Size | 4.0 mm x 4.55 mm |
| Feature Size | - |
| Technology | 1P1M Metal Contact Poly Gate CMOS |
| Description | A 56 x 10 bits dynamic RAM. Seen in HP45, HP55 |
|---|---|
| Device Family | HP Classical Series |
| Date Code | 1975.27 |
| Size | - |
| Feature Size | - |
| Technology | 1P1M Metal Contact Poly Gate PMOS |
| Description | A 25MHz GBP bipolar low-noise instrumentation amplifier with laser-trimmed resistors |
|---|---|
| Device Family | - |
| Date Code | 1995.48 |
| Size | 4.2 mm x 2.5 mm |
| Feature Size | ~9μm |
| Technology | Bipolar |
| Description | A Chinese uA741 clone |
|---|---|
| Device Family | uA741 Compatibles |
| Date Code | 1961 |
| Size | ~1.5mm |
| Feature Size | ~12μm |
| Technology | Bipolar |