0195136047.pdf

294 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS Preset Clear Ck D QQ 01 01 10 10 Not allowed (b) Inputs Outputs 01 00 00 11 10 ...

6.2 DIGITAL SYSTEM COMPONENTS 295 D C A E F J Ck K B Q J Q Ck Q KQ (a) (c) JK 00 01 10 11 Qn+ 1 Qn+ 1 Qn Qn 01 10 (b) Inputs Out ...

296 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS large numbers of just a few building blocks, repeated in simple ways. In this s ...

6.2 DIGITAL SYSTEM COMPONENTS 297 A 0 A 1 A 0 A 1 A 2 10 10 11 11 A 2 0 1 0 1 00 00 01 01 0 1 0 1 Q 7 Q 0 Q 1 Q 2 Q 3 Q 4 Q 5 Q ...

298 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS n 0 n 1 n 2 I 7 I 0 I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0 I 1 I 2 I 3 I 4 I 5 I 6 I 7 ...

6.2 DIGITAL SYSTEM COMPONENTS 299 S 1 S 1 S 0 I 1 S^0 I 0 I 0 I 1 I 2 I 3 I 2 I 3 0 Select Lines Select Lines Input lines Output ...

300 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS D 3 Ck Clock Data input Preset Data output Clear (a) (b) FF3 Pr Clr Y 3 D 2 Ck ...

6.2 DIGITAL SYSTEM COMPONENTS 301 0 Clock Q 2 0 0 0 1 1 1 1 0 0 Q 1 0 1 1 0 0 1 1 0 0 Q 0 1 0 1 0 1 0 1 0 T 1 T 2 T 3 T 4 T 5 T ...

302 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS Clock (b) 000 000 0 0 00 00 0 00 0 00 0 0 00 0 0 11 1 1 1 11 1 T 1 Q 0 Q 1 Q 2 ...

6.2 DIGITAL SYSTEM COMPONENTS 303 EXAMPLE 6.2.2 Show the logic diagram of an 8-to-1 multiplexer. Solution The logic diagram is d ...

304 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS Clock Clear Data in (b) T 1 T 2 T 3 T 4 T 5 T 6 T 7 T (^8) Figure E6.2.3Continu ...

6.2 DIGITAL SYSTEM COMPONENTS 305 Figure E6.2.4Continued (c) 111 000 110 101 100 011 010 001 Solution The state table and the st ...

306 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS does not receive the first change instruction, but it does receive the second o ...

6.2 DIGITAL SYSTEM COMPONENTS 307 V 0 analog output voltage Vref reference analog input voltage b 0 most significant bit of bina ...

308 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS Vo=−Vref(b 0 × 2 −^1 +b 1 × 2 −^2 +···+bn− 1 × 2 −n) (6.2.3) Because only two r ...

6.2 DIGITAL SYSTEM COMPONENTS 309 B 2 B 2 B 1 B 1 B 0 B 0 + − Vref Vo R R R R R R R R 1 2 3 4 5 6 7 Figure 6.2.113-bit 2n–RD/A c ...

310 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS + − V 1 V 2 D/A converter Reset Digital output Analog input Binary counter Figu ...

6.2 DIGITAL SYSTEM COMPONENTS 311 stops being incremented again. The value of the counter becomes the binary code for the analog ...

312 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS READ-AND-WRITEMEMORY(RAM) Writing is the same as storing data into memory and r ...

6.2 DIGITAL SYSTEM COMPONENTS 313 most common disks have 11-in diameters and 200 tracks (concentric rings of data) per surface, ...