SELECT cpu FROM table_11703336_1 WHERE ram = "28 KB of ram" AND display_size = "128×64 pixels 21×8 characters"
Berapa CPU untuk kalkulator dengan 28 kb RAM dan ukuran tampilan 128 × 64 piksel 21 × 8 karakter?
CREATE TABLE table_11703336_1 (cpu VARCHAR, ram VARCHAR, display_size VARCHAR)