DUO DECIMAL

Make an ATTiny84 based computer with 7 segment number display and 2 buttons. Use the 512 bytes of EEPROM to store program code. Use the 512 bytes of SRAM for program data and as a code editing buffer. Programs will be written in DDNC (DUO Decimal numeric code).

(x1) Microcontroller: ATTINY84A-PU
(x1) 7 segment number display: LA-401VD (SC56-11EWA)
(x2) Button: 101-TS7311T1602-EV
(x3) 10K ohm resistor: 291-10K-RC
(x1) 20K ohm resistor: 291-20K-RC
(x1) 330 ohm resistor (7 isolated): 4114R-1-331LF
(x1) 14 pin chip socket: 2-641599-4 (1825093-3)
(x2) 3 pin male header: 69190-403
(optional) 5 pin female header: 929870-01-05-RA
(x1) Larger capacitor: UVR1H100MDD1TA
(x1) Battery holder: BAT-HLD-001
(x1) Battery: CR2032
(x1) Switch: MHSS1104
(x1) Board

There is a fuse for preserving EEPROM between programming cycles.